Selected Conference Papers
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  1. Almanza-Soto, J. P., Howell, K. C., "Itinerary Prediction in the Circular Restricted Three-Body Problem Leveraging Normal Forms," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  2. Davis, D. C., Fahey, L. V., Scheuerle, S.T., Howell, K. C., "Long-Term Earth Evasion Following Jettisons from the Gateway NRHO," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  3. Numa, N. M. and Howell, K. C., "Leveraging Distant Retrograde Orbits in a Servicer-Customer Architecture for Cisulunar Operations," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  4. Waldecker, C. and Howell, K., "Satellite Servicing in Cislunar Networks with Design and Scheduling Using a Genetic Algorithm," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  5. Jain, D. and Howell, K. C., "Leveraging Quasi-Periodic Orbits to Design L1/L2 Cycler Orbits in Cislunar Space," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  6. Nugent, L., Howell, K., and Davis, D., "Flexible Maneuver Planning for Collision Avoidance in L1/L2 Libration Point Orbits," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  7. Sanaga, R. R., Park, B., and Howell, K., "A Unified Numerical Transition Scheme between Dynamical Models within Cislunar Space," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  8. Park, B., Howell, K., and Stewart, S., "Elliptical Lunar Frozen Orbit Constellation Design within a Model of Evolving Fidelity," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  9. Park, B., Sanaga, R. R., and Howell, K., "Numerical Assessment of Intermediate Models in a Frequency-Based Hierarchy for the Cislunar Domain," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  10. Sadaka, N. and Howell, K., "Designing Multi-Orbit Constellations for Potential Surveillance in the Cislunar Regime," 35th AAS/AIAA Space Flight Mechanics Meeting, Kaua'i, Hawaii, January 19-23, 2025.
  11. Park, B., Sanaga, R. R., and Howell, K. C., "Bridging Ephemeris Transition Gaps: Quasi-Periodic Extensions for the Hill Restricted Four-Body Problem in Cislunar Space," 75th International Astronautical Congress (IAC), Milan, Italy, October 14-18, 2024.
  12. Dominguez, M., and Howell, K. C., "Preliminary Design Strategy for Long-Term Loitering Orbits in Cislunar Space," AAS/AIAA Astrodynamics Specialist Conference, Broomfield, Colorado, Aug 11-15, 2024.
  13. Williams, D., Howell, K., and Davis, D., "Dynamics Leveraged in Long-Term Stationkeeping Strategies for Multi-Body Orbits," AAS/AIAA Astrodynamics Specialist Conference, Broomfield, Colorado, Aug 11-15, 2024.
  14. Gupta M., Howell, K., "Cislunar Trajectory Design for Constellations Leveraging Sidereal-Synodic Resonant Behavior," AAS/AIAA Astrodynamics Specialist Conference, Broomfield, Colorado, Aug 11-15, 2024.
  15. Sadaka, N., Gupta M., Howell, K., and Frueh, C., "Observing the Cislunar Surveillance Cone from Synodic Resonant Orbit Constellations," AAS/AIAA Astrodynamics Specialist Conference, Broomfield, Colorado, Aug 11-15, 2024.
  16. Waldecker, C. and Howell, K., "A Design Approach for Cislunar On-Orbit Servicing Networks," AAS/AIAA Astrodynamics Specialist Conference, Broomfield, Colorado, Aug 11-15, 2024.
  17. Nugent, L. and Howell, K., "Relative Trajectory Design Methodologies Informed by Stretching and Restoring Directions," AAS/AIAA Astrodynamics Specialist Conference, Broomfield, Colorado, Aug 11-15, 2024.
  18. Nugent, L., Bolliger, M., Heritier, A., Davis, D., and Howell, K., "Short-Term Loitering in the Vicinity of the Gateway Near Rectilinear Halo Orbit in the Circular Restricted Three-Body Problem," Rocky Mountain AAS GN&C Conference, Feb 1-7, 2024.
  19. Gul, R., Dominguez, M., Dai, R., and Howell, K. C., "Feature Learning Based Optimal Control Method for Cislunar Trajectory Design," AIAA SciTech Forum, Orlando, Florida, January 8 - 12, 2024.
  20. Sanaga, R. R. and Howell, K. C., "Analyzing the Challenging Region in the Earth-Moon L2 Halo Family via Hill Restricted Four-Body Problem Dynamics," AIAA SciTech Forum, Orlando, Florida, January 8 - 12, 2024.
  21. Park, B. and Howell, K. C., "Characterizing Transition-Challenging Regions Leveraging the Elliptic Restricted Three-Body Problem: L2 Halo Orbits," AIAA SciTech Forum, Orlando, Florida, January 8 - 12, 2024.
  22. Jain, D. and Howell, K. C., "Leveraging Quasi-Periodic Orbits to Design Transfers in the Circular Restricted Three-Body Problem," AIAA SciTech Forum, Orlando, Florida, January 8 - 12, 2024.
  23. Canales, D., Fantino, E., Howell, K., and Flores, R., "Design of optimal spatial low-energy trajectories to Near Earth Objects," 74th International Astronautical Congress, Baku, Azerbaijan, October 2-6, 2023.
  24. Park, B. and Howell, K., "Leveraging the Elliptic Restricted Three-Body Problem for Characterization of Multi-Year Earth-Moon L2 Halos in an Ephemeris Model," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana, August 13-17, 2023.
  25. Gomez, R. J., Almanza-Soto, J. P., Howell, K. C., Aziz, J. D., "Construction and Analysis of L1/L2 Cycler Orbits in the Earth-Moon System," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana, August 13-17, 2023.
  26. Davis, D., Scheuerle, S., McCarty, S., Zimovan-Spreen, E., McCarthy, B., McGuire, M., and Howell, K., "Jettison and Disposal from Near Rectilinear Halo Orbits, Part 2: Applications," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana, August 13-17, 2023.
  27. Scheuerle, S., Davis, D., Zimovan-Spreen, E., McCarthy, B., Henry, D., and Howell, K., "Jettison and Disposal from Near Rectilinear Halo Orbits, Part 1: Theory," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana, August 13-17, 2023.
  28. Williams, D., Howell, K., and Davis, D., "A Comparison of Station-Keeping Strategies for Halo Orbits," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana, August 13-17, 2023.
  29. Power, R. and Howell, K., "Numerical Methodology for Extending Koopman Operator Theory Application in the CRTBP," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana, August 13-17, 2023.
  30. Gupta, M. and Howell, K., "Cislunar Eclipse Mitigation Strategies for Resonant Periodic Orbits," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana, August 13-17, 2023.
  31. Sadaka, N. and Howell, K., "Periodic Transfers that Depart and Return to an Operating Orbit Using Resonant Structures in the Planar Three-Body Problem," 33rd AAS/AIAA Space Flight Mechanics Meeting, Austin, Texas, January 15-19, 2023.
  32. Scheuerle, S., Howell, K., and Davis, D., "Low Thrust Augmentation for Ballistic Lunar Transfers," 33rd AAS/AIAA Space Flight Mechanics Meeting, Austin, Texas, January 15-19, 2023.
  33. Reddy Sanaga, R. and Howell, K., "Synodic Resonant Halo Orbits in the Hill Restricted Four-Body Problem," 33rd AAS/AIAA Space Flight Mechanics Meeting, Austin, Texas, January 15-19, 2023.
  34. Gupta, M., Howell, K., and Frueh, C., "Constellation Design to Support Cislunar Surveillance Leveraging Sidereal Resonant Orbits," 33rd AAS/AIAA Space Flight Mechanics Meeting, Austin, Texas, January 15-19, 2023.
  35. Muralidharan, V., Makhdoomo, M., Barad, K., Howell, K.C., Luna, C., and Mendez, M., "Hardware-in-the-loop Proximity Operations in Cislunar Space," 73rd International Astronautical Congress, Paris, France, September 18-22, 2022.
  36. LaFarge, N. Howell, K., and Folta, D., "Adaptive Closed-Loop Maneuver Planning for Low-Thrust Spacecraft using Reinforcement Learning," 73rd International Astronautical Congress, Paris, France, September 18-22, 2022.
  37. McCarthy, B., and Howell, K., "Accessing the Vicinity of the L1 Libration Point via Low-Energy Transfers Leveraging Quasi-Periodic Orbits," AAS/AIAA Astrodynamics Specialist Conference, Charlotte, North Carolina, August 7-10, 2022.
  38. Gupta, M. Howell, K., and Frueh, C., "Long-Term Cislunar Surveillance Via Multi-Body Resonant Trajectories," AAS/AIAA Astrodynamics Specialist Conference, Charlotte, North Carolina, August 7-10, 2022.
  39. Power, R. and Howell, K., "Cislunar Orbital Transfer Employing Low-Thrust Dynamical Structures," AAS/AIAA Astrodynamics Specialist Conference, Charlotte, North Carolina, August 7-10, 2022.
  40. Park, B. and Howell, K., "Leveraging Intermediate Dynamical Models for Transitioning from the Circular Restricted Three-Body Problem to an Ephemeris Model," AAS/AIAA Astrodynamics Specialist Conference, Charlotte, North Carolina, August 7-10, 2022.
  41. York, C., Howell, K., and Marchand, B., "State Perturbation Tradespaces in Trajectory Targeting Convergence Analysis," AAS/AIAA Astrodynamics Specialist Conference, Charlotte, North Carolina, August 7-10, 2022.
  42. Hoffman, A., Park, B., Roorda, T., Stewart, S., and Howell, K., "Trajectory Design for a Secondary Payload Within a Complex Gravitational Environment: The Khon-1 Spacecraft," AAS/AIAA Astrodynamics Specialist Conference, Charlotte, North Carolina, August 7-10, 2022.
  43. Scheuerle, S. and Howell, K., "Tidal Attributes of Low-energy Transfers in the Earth-Moon-Sun System," AAS/AIAA Astrodynamics Specialist Conference, Charlotte, North Carolina, August 7-10, 2022.
  44. Nazari, M., Canales, D., McCann, B., Butcher, E., and Howell, K., "Full N-Body Problem in the Geometric Mechanics Framework and Reduction to Circular Restricted Three-Body Problem," AAS/AIAA Astrodynamics Specialist Conference, Charlotte, North Carolina, August 7-10, 2022.
  45. Davis, D. C., Zimovan-Spreen, E. M., Scheuerle, S. T., and Howell, K. C., "Debris Avoidance and Phase Change Maneuvers in Near Rectilinear Halo Orbits," 44th Annual AAS Guidance, Navigation, and Control Conference, Breckenridge, Colorado, February 3 - 9, 2022.
  46. McCarthy, B. P. and Howell, K. C., "Characterization of Families of Low-Energy Transfers to Cislunar Four-Body Quasi-Periodic Orbits," AIAA SciTech Forum, San Diego, California, January 3 - 7, 2022.
  47. Boudad, K. K., Howell, K. C., and Davis, D. C., "Analogs for Earth-Moon Halo Orbits and their Evolving Characteristics in Higher-Fidelity Force Models," AIAA SciTech Forum, San Diego, California, January 3 - 7, 2022.
  48. LaFarge, N. B., Howell, K. C., and Folta, D. C., "An Autonomous Stationkeeping Strategy for Multi-Body Orbits Leveraging Reinforcement Learning," AIAA SciTech Forum, San Diego, California, January 3 - 7, 2022.
  49. Davis, D. C., Zimovan-Spreen, E., Power, R., and Howell, K. C., "Cubesat Deployment from a Near-Rectilinear Halo Orbit," AIAA SciTech Forum, San Diego, California, January 3 - 7, 2022.
  50. Prezent, J., Sikes, J., Ledbetter, W., Sood, R., Howell, K. C., and Stuart, J., "ASSET: Astrodynamics Software and Science Enabling Toolkit," AIAA SciTech Forum, San Diego, California, January 3 - 7, 2022.
  51. McCarthy, B. P. and Howell, K. C., "Ballistic Lunar Transfer Design to Access Cislunar Periodic and Quasi-Periodic Orbits Leveraging Flybys of the Moon," 72nd International Astronautical Congress, Dubai, United Arab Emirates, October 25 - 29, 2021.
  52. Boudad, K. K., Howell, K. C., and Davis, D. C., "Round-Trip Trajectories Between Earth-Moon NRHOs and Heliocentric Space in the Earth-Moon-Sun System," 72nd International Astronautical Congress, Dubai, United Arab Emirates, October 25 - 29, 2021.
  53. Ojeda Romero, J. A. and Howell, K. C., "Ridesharing Options from Geosynchronous Transfer Orbits in the Sun-Earth System," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana (Virtual), August 9 - 11, 2021.
  54. York, C. E., Howell, K. C., and Marchand, B., "Convergence Basin Analysis for Spacecraft Trajectory Targeting," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana (Virtual), August 9 - 11, 2021.
  55. Park, B., Howell, K. C., and Folta, D. C., "Design of Low-Thrust Transfers from an NRHO to Low Lunar Orbits: Applications for Small Spacecraft," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana (Virtual), August 9 - 11, 2021.
  56. Muralidharan, V. and Howell, K. C., "Departure and Trajectory Design Applications using Stretching Directions," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana (Virtual), August 9 - 11, 2021.
  57. Scheuerle, S. T. and Howell, K. C., "Characteristics and Analysis of Families of Low-Energy Ballistic Lunar Transfers," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana (Virtual), August 9 - 11, 2021.
  58. Gupta, M., Howell, K. C., and Frueh, C., "Earth-Moon Multi-Body Orbits to Facilitate Cislunar Surveillance Activities," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana (Virtual), August 9 - 11, 2021.
  59. Canales, D., Howell, K. C., and Fantino, E., "Using Finite-Time Lyapunov Exponent Maps for Planetary Moon-Tour Design," AAS/AIAA Astrodynamics Specialist Conference, Big Sky, Montana (Virtual), August 9 - 11, 2021.
  60. Frueh, C., Howell, K. C., DeMars, K. T., Bhadauria S., and Gupta, M., "Cislunar Space Traffic Management: Surveillance through Earth-Moon Resonance Orbits," 8th ESA/ESOC European Conference on Space Debris, Virtual, April 20 - 23, 2021.
  61. McCarthy, B. P. and Howell, K. C., "Quasi-Periodic Orbits in the Sun-Earth-Moon Bicircular Restricted Four-Body Problem," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  62. Prado Pino, B., Howell, K. C., and Folta, D. C., "A Modified Orbit Chaining Framework for Low-Thrust Transfers Between Orbits in Cislunar Space," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  63. LaFarge, N. B., Howell, K. C., and Linares, R., "A Hybrid Closed-Loop Guidance Strategy for Low-Thrust Spacecraft Enabled by Neural Networks," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  64. Davis, D. C., Power, R., Howell, K. C., and Gutkowski, J., "Lunar Impact Probability for Spacecraft in Near Rectilinear Halo Orbits," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  65. Boudad, K. K., Howell, K. C., and Davis, D. C., "Energy and Phasing Considerations for Low-Energy Transfers from Cislunar to Heliocentric Space," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  66. Canales, D., Gupta, M., Park, B., and Howell, K. C., "Exploration of Deimos and Phobos Leveraging Resonant Orbits," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  67. Zimovan-Spreen, E. M., Davis, D. C., and Howell, K. C., "Recovery Trajectories for Inadvertent Departures from an NRHO," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  68. Muralidharan, V. and Howell, K. C., "Orbit Maintenance Strategy for Earth-Moon Halo Orbits," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  69. Eapen, R. T., Alfriend, K. T., and Howell, K. C., "On the Use of Zero-Momentum Surfaces to Identify Opportunities to Planar Lyapunov Orbits," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  70. Frueh, C., Howell, K., DeMars, K. J., and Bhadauria, S., "Cislunar Space Situational Awareness," 31st AAS/AIAA Spaceflight Mechanics Meeting, Charlotte, North Carolina (Virtual), February 1 - 3, 2021.
  71. McCarthy, B. P. and Howell, K. C., "Cislunar Transfer Design Exploiting Periodic and Quasi-Periodic Orbital Structures in the Four-Body Problem," 71st International Astronautical Congress, The CyberSpace Edition, October 12 - 14, 2020.
  72. Prado Pino, B., Pritchett, R., Howell, K. C., and Folta, D. C., "Extended Mission Options for the Lunar IceCube Low-Thrust Spacecraft by Leveraging the Dynamical Environment," 71st International Astronautical Congress, The CyberSpace Edition, October 12 - 14, 2020.
  73. Zimovan-Spreen, E. M., Howell, K. C., and Davis, D. C., "Eclipse Avoidance in Dynamical Structures Nearby NRHOs in a Higher-Fidelity Model," AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, California (Virtual), August 9 - 12, 2020.
  74. Khoury, F., and Howell, K. C., "Orbital Rendezvous and Spacecraft Loitering in the Earth-Moon System," AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, California (Virtual), August 9 - 12, 2020.
  75. Prado Pino, B., and Howell, K. C., "An Energy-Informed Adaptive Algorithm for Low-Thrust Spacecraft Cislunar Trajectory Design," AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, California (Virtual), August 9 - 12, 2020.
  76. Scheuerle, S. T., McCarthy, B. P., and Howell, K. C., "Construction of Ballistic Lunar Transfers Leveraging Dynamical Systems Techniques," AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, California (Virtual), August 9 - 12, 2020.
  77. Canales, D., Howell, K. C., and Fantino, E., "Moon-to-Moon Transfer Methodology for Multi-Moon Systems in the Coupled Spatial Circular Restricted Three-Body Problem," AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, California (Virtual), August 9 - 12, 2020.
  78. Muralidharan, V. and Howell, K. C., "Stationkeeping in Earth-Moon Near Rectinlinear Halo Orbits," AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, California (Virtual), August 9 - 12, 2020.
  79. Boudad, K. K., Howell, K. C., and Davis, D. C., "Heliocentric Access from Cislunar Space within the Context of the Bicircular Restricted Four-Body Problem," AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, California (Virtual), August 9 - 12, 2020.
  80. Pritchett, R., Howell, K., and Folta, D., "A Trajectory Design Framework Leveraging Low-Thrust for the Lunar IceCube Mission," 5th IAA Conference on University Satellite Missions and CubeSat Workshop, Rome, Italy, January 28 - January 31, 2020.
  81. Davis, D. C., Khoury, F. S., Howell, K. C., and Sweeney, D. J., "Phase Control and Eclipse Avoidance in Near Rectilinear Halo Orbits," AAS Guidance, Navigation and Control Conference, Breckenridge, Colorado, January 30 - February 5, 2020.
  82. LaFarge, N. B., Miller, D., Howell, K. C., and Linares, R., "Guidance for Closed-Loop Transfers using Reinforcement Learning with Application to Libration Point Orbits," AIAA SciTech Forum, Orlando, Florida, January 6 - 10, 2020.
  83. Pritchett, R., Howell, K. C., and Folta, D. C., "Low-Thrust Trajectory Design for a Cislunar CubeSat Leveraging Structures from the Bicircular Restricted Four-Body Problem," 70th International Astronautical Congress, Washington, D.C., USA, October 21 - 25, 2019.
  84. Ojeda Romero, J. A. and Howell, K. C., "Transfers from GTO to Sun-Earth Libration Orbits," AAS/AIAA Astrodynamics Specialist Conference, Portland, Maine, August 11 - 15, 2019.
  85. Davis, D. C., Boudad, K. K., Power, R. J., and Howell, K. C., "Heliocentric Escape and Lunar Impact From Near Rectilinear Halo Orbits," AAS/AIAA Astrodynamics Specialist Conference, Portland, Maine, August 11 - 15, 2019.
  86. Zimovan-Spreen, E. M. and Howell, K. C., "Dynamical Structures Nearby NRHOs with Applications in Cislunar Space," AAS/AIAA Astrodynamics Specialist Conference, Portland, Maine, August 11 - 15, 2019.
  87. Das-Stuart, A. and Howell, K. C., "Contingency Planning in Complex Dynamical Environments via Heuristically Accelerated Reinforcement Learning," AAS/AIAA Astrodynamics Specialist Conference, Portland, Maine, August 11 - 15, 2019.
  88. Cox, A. D., Howell, K. C., and Folta, D. C., "High-Energy Lunar Capture Via Low-Thrust Dynamical Structures," AAS/AIAA Astrodynamics Specialist Conference, Portland, Maine, August 11 - 15, 2019.
  89. Boudad, K. K., Howell, K. C., and Davis, D. C., "Near Rectilinear Halo Orbits in Cislunar Space within the Context of the Bicircular Four-Body Problem," 2nd IAA/AAS SciTech Forum, Moscow, Russia, June 25 - 27, 2019.
  90. Davis, D. C., Boudad, K. K., Phillips, S. M., and Howell, K. C., "Disposal, Deployment, and Debris in Near Rectilinear Halo Orbits," 29th AAS/AIAA Space Flight Mechanics Meeting, Ka'anapali, Maui, Hawaii, January 13 - 17, 2019.
  91. York, C. E. and Howell, K. C., "A Two-Level Differential Corrections Algorithm for Low-Thrust Spacecraft Trajectory Targeting," 29th AAS/AIAA Space Flight Mechanics Meeting, Ka'anapali, Maui, Hawaii, January 13 - 17, 2019.
  92. Cox, A. D., Howell, K. C., and Folta, D. C., "Transit and Capture in the Planar Three-Body Problem Leveraging Low-Thrust Dynamical Structures," 29th AAS/AIAA Space Flight Mechanics Meeting, Ka'anapali, Maui, Hawaii, January 13 - 17, 2019.
  93. McCarthy, B. P. and Howell, K. C., "Trajectory Design Using Quasi-Periodic Orbits in the Multi-Body Problem," 29th AAS/AIAA Space Flight Mechanics Meeting, Ka'anapali, Maui, Hawaii, January 13 - 17, 2019.
  94. Pritchett, R., Cox, A. D., Howell, K. C., Folta, D. C., and Grebow, D., "Low-Thrust Trajectory Design Via Direct Transcription Leveraging Structures from the Low-Thrust Restricted Problem," 69th International Astronautical Congress, Bremen, Germany, October 1 - 5, 2018.
  95. Das-Stuart, A., Howell, K. C., and Folta, D. C., "Rapid Trajectory Design in Complex Environments Enabled Via Supervised and Reinforcement Learning Strategies," 69th International Astronautical Congress, Bremen, Germany, October 1 - 5, 2018.
  96. Whitley, R. J., Davis, D. C., Burke, L. M., McCarthy, B. P., Power, R. J., McGuire, M. L., and Howell, K. C., "Earth-Moon Near Rectilinear Halo and Butterfly Orbits for Lunar Surface Exploration," AAS/AIAA Astrodynamics Specialist Conference, Snowbird, Utah, August 19 - 23, 2018.
  97. Boudad, K. K., Davis, D. C., and Howell, K. C., "Disposal Trajectories From Near Rectilinear Halo Orbits," AAS/AIAA Astrodynamics Specialist Conference, Snowbird, Utah, August 19 - 23, 2018.
  98. Cox, A. D., Howell, K. C., and Folta, D. C., "Trajectory Design Leveraging Low-Thrust, Multi_Body Equilibria and Their Manifolds," AAS/AIAA Astrodynamics Specialist Conference, Snowbird, Utah, August 19 - 23, 2018.
  99. Pritchett, R., Zimovan, E., and Howell, K. C., "Impulsive and Low-Thrust Transfer Design between Stable and Nearly Stable Periodic Orbits in the Restricted Problem," 18th AIAA SciTech Forum, Kissimmee, Florida, January 8 - 12, 2018.
  100. Das-Stuart, A., Howell, K. C., and Folta, D. C., "A Rapid Trajectory Design Strategy for Complex Environments Leveraging Attainable Regions and Low-Thrust Capabilities," 68th International Astronautical Congress, Adelaide, Australia, September 25 - 29.
  101. Bosanac, N., Webster, C. M., Howell, K. C., and Folta, D. C., "Trajectory Design and Station-Keeping Analysis for the Wide Field Infrared Survey Telescope Mission," AAS/AIAA Astrodynamics Specialist Conference, Columbia River Gorge, Stevenson, Washington, August 21 - 24, 2017.
  102. Davis, D. C., Philips, S. M., Howell, K. C., Vutukuri, S., and McCarthy, B. P., "Stationkeeping and Transfer Trajectory Design for Spacecraft in Cislunar Space," AAS/AIAA Astrodynamics Specialist Conference, Columbia River Gorge, Stevenson, Washington, August 21 - 24, 2017.
  103. Wahl, T., and Howell, K. C., "Autonomous Guidance Algorithms for Formation Reconfiguration Maneuvers," AAS/AIAA Astrodynamics Specialist Conference, Columbia River Gorge, Stevenson, Washington, August 21 - 24, 2017.
  104. Spreen, C., and Howell, K. C., "Automated Node Placement Capability for Spacecraft Trajectory Targeting Using Higher-Order State Transition Matrices," AAS/AIAA Astrodynamics Specialist Conference, Columbia River Gorge, Stevenson, Washington, August 21 - 24, 2017.
  105. Pritchett, R., Howell, K. C., and Grebow, D., "Low-Thrust Transfer Design Based on Collocation Techniques: Applications in the Restricted Three-Body Problem," AAS/AIAA Astrodynamics Specialist Conference, Columbia River Gorge, Stevenson, Washington, August 21 - 24, 2017.
  106. Cox, A. D., Howell, K. C., and Folta, D. C., "Dynamical Structures in a Combined Low-Thrust Multi-Body Environment," AAS/AIAA Astrodynamics Specialist Conference, Columbia River Gorge, Stevenson, Washington, August 21 - 24, 2017.
  107. Zimovan, E. M., Howell, K. C., and Davis, D. C., "Near Rectilinear Halo Orbits and Their Application in Cis-Lunar Space," 3rd International Academy of Astronautics Conference on Dynamics and Control of Space Systems, Moscow, Russia, May 30 - June 1, 2017.
  108. Guzzetti, D., Zimovan, E., Howell, K., and Davis, D., "Stationkeeping Analysis for Spacecraft in Lunar Near Rectilinear Halo Orbits," 27th AAS/AIAA Space Flight Mechanics Meeting, San Antonio, Texas, February 5-9, 2017.
  109. Davis, D., Bhatt, S., Howell, K., Jang, J-W., Whitley, R., Clark, F., Guzzetti, D., Zimovan, E., and Barton, G., "Orbit Maintenance and Navigation of Human Spacecraft At Cislunar Near Rectilinear Halo Orbits," 27th AAS/AIAA Space Flight Mechanics Meeting, San Antonio, Texas, February 5-9, 2017.
  110. Bosanac, N., Cox, A. D., Howell, K. C., and Folta, D., "Trajectory Design for a Cislunar Cubesat Leveraging Dynamical Systems Techniques: The Lunar IceCube Mission," 27th AAS/AIAA Space Flight Mechanics Meeting, San Antonio, Texas, February 5-9, 2017.
  111. Folta, D., Bosanac, N., Cox, A. D., and Howell, K. C., "The Lunar IceCube Mission Challenge: Attaining Science Orbit Parameters from a Constrained Approach Trajectory," 27th AAS/AIAA Space Flight Mechanics Meeting, San Antonio, Texas, February 5-9, 2017.
  112. Sanchez, D. M., Prado, A. F. B. A., and Howell, K. C., "Search for Stable Regions in the Irregular Haumea-Hi'aka Binary System," 27th AAS/AIAA Space Flight Mechanics Meeting, San Antonio, Texas, February 5-9, 2017.
  113. Bucci, L., Lavagna, M., Guzzetti, D., and Howell, K. C., "Periodic Orbit-Attitude Solutions along Planar Orbits in a Perturbed Circular Restricted Three-Body Problem for the Earth-Moon System," IAF 67th International Astronautical Congress, Guadalajara, Mexico, September 26-30, 2016.
  114. Kikuchi, S., Howell, K., Tsuda, Y., and Kawaguchi, J., "Orbit-Attitude Coupled Motion Around Small Bodies: Sun-Synchronous Orbits with Sun-Tracking Motion," IAF 67th International Astronautical Congress, Guadalajara, Mexico, September 26-30, 2016.
  115. Bosanac, N., Howell, K., and Fischbach, E., "Leveraging Discrete Variational Mechanics to Explore the Effect of an Autonomous Three-Body Interaction Added to the Restricted Problem," Astrodynamics Network Astronet-II: The Final Conference, Tossa de Mar, Spain, June 2015; Astrodynamics Network Astronet-II, Astrophysics and Space Science Proceedings, Vol. 44, Springer International Publishing, Switzerland 2016, pp. 1-16, DOI: https://dx.doi.org/10.1007/978-3-319-23986-6_1.
  116. Folta, D., Webster, C., Bosanac, N., Cox, A. D., Guzzetti, D., and Howell, K., "Trajectory Design Tools for Libration and Cislunar Environments," 6th International Conference on Astrodynamics Tools and Techniques, Darmstadt, Germany, March 14-17, 2016.
  117. Cox, A. D., Bosanac, N., Guzzetti, D., Howell, K., Folta, D., and Webster, C., "An Interactive Trajectory Design Environment Leveraging Dynamical Structures in Multi-Body Regimes," 6th International Conference on Astrodynamics Tools and Techniques, Darmstadt, Germany, March 14-17, 2016.
  118. Wahl, T., and Howell, K., "Autonomous Guidance Algorithm for Multiple Spacecraft and Formation Reconfiguration Maneuvers," 26th AAS/AIAA Space Flight Mechanics Meeting, Napa, California, February 15-18, 2016.
  119. Sood, R., Melosh, J., and Howell, K., "Lunar Advanced Radar Orbiter for Subsurface Sounding (LAROSS): Lava Tube Exploration Mission," 26th AAS/AIAA Space Flight Mechanics Meeting, Napa, California, February 15-18, 2016.
  120. Sood, R., and Howell, K., "L4, L5 Solar Sail Transfers and Trajectory Design: Solar Observations and Potential Earth Trojan Exploration," 26th AAS/AIAA Space Flight Mechanics Meeting, Napa, California, February 15-18, 2016.
  121. Folta, D., Bosanac, N., Cox, A. D., and Howell, K., "The Lunar IceCube Mission Design: Construction of Feasible Transfer Trajectories with a Constrained Departure," 26th AAS/AIAA Space Flight Mechanics Meeting, Napa, California, February 15-18, 2016.
  122. Cox, A. D., and Howell, K., "Transfers to a Sun-Earth Saddle Point: An Extended Mission Design Option for LISA Pathfinder," 26th AAS/AIAA Space Flight Mechanics Meeting, Napa, California, February 15-18, 2016.
  123. Guzzetti, D., Bosanac, N., Haapala, A., Howell, K., and Folta, D., "Rapid Trajectory Design in the Earth-Moon Ephemeris System via an Interactive Catalog of Periodic and Quasi-Periodic Orbits," 66th IAF International Astronautical Congress, Jerusalem, Israel, October 12-16, 2015.
  124. Guzzetti, D., and Howell, K., "Natural Periodic Orbit-Attitude Behaviors for Rigid Bodies in Three-Body Periodic Orbits," 66th IAF International Astronautical Congress, Jerusalem, Israel, October 12-16, 2015.
  125. Colagrossi, A., Ferrari, F., Lavagna, M., and Howell, K., "Dynamical Evolution About Asteroids with High Fidelity Gravity Field and Perturbations Modeling," AAS/AIAA Astrodynamics Specialist Conference, Vail, Colorado, August 9-13, 2015.
  126. Das-Stuart, A., and Howell, K., "Solar Sail Transfers from Earth to the Lunar Vicinity in the Circular Restricted Problem," AAS/AIAA Astrodynamics Specialist Conference, Vail, Colorado, August 9-13, 2015.
  127. Short, C., Howell, K., Haapala, A., and Dichmann, D., "Mode Analysis for Long-term Behavior in a Resonant Earth-Moon Trajectory," AAS/AIAA Astrodynamics Specialist Conference, Vail, Colorado, August 9-13, 2015.
  128. Spreen, C., Howell, K., Marchand, B., "Node Placement Capability for Spacecraft Trajectory Targeting in an Ephemeris Model," AAS/AIAA Astrodynamics Specialist Conference, Vail, Colorado, August 9-13, 2015.
  129. Broschart, S., Abrahamson, M., Bhaskaran, S., Fahnestock, E., Karimi, R., Lantoine, G., Pavlak, T., and Chappaz, L., "The Small-Body Dynamics Toolkit and Associated Close-Proximity Navigation Analysis Tools at JPL," AAS Guidance and Control Conference, Breckenridge, Colorado, January 30-February 4, 2015.
  130. Bosanac, N., Howell, K., and Fischbach, E., "A Natural Autonomous Force Added in the Restricted Problem and Explored Via Stability Analysis and Discrete Variational Mechanics," AAS/AIAA Space Flight Mechanics Meeting, Williamsburg, Virginia, January 11-15, 2015.
  131. Chappaz, L., Broschart, S., Lantoine, G., and Howell, K., "Orbital Perturbation Analysis Near Binary Asteroid Systems," AAS/AIAA Space Flight Mechanics Meeting, Williamsburg, Virginia, January 11-15, 2015.
  132. Folta, D., Dichmann, D., Clark, P., Haapala, A., and Howell, K., "LunarCube Transfer Trajectory Options," AAS/AIAA Space Flight Mechanics Meeting, Williamsburg, Virginia, January 11-15, 2015.
  133. Chappaz, L., and Howell, K., "Trajectory Design for Bounded Motion Near Uncertain Binary Systems Comprised of Small Irregular Bodies Exploiting Sliding Control Modes," IAF 65th International Astronautical Congress, Toronto, Canada, September 29-October 3, 2014.
  134. Haapala, A., Howell, K., and Folta, D., "Incorporating the Evolution of Multi-body Orbits into the Trajectory Trade Space and Design Process," IAF 65th International Astronautical Congress, Toronto, Canada, September 29-October 3, 2014.
  135. Chappaz, L., and Howell, K., "Bounded Motion near Binary Systems Comprised of Small Irregular Bodies," AIAA/AAS Astrodynamics Specialist Conference, San Diego, California, August 2014.
  136. Chappaz, L., Sood, R., Melosh, H., and Howell, K., "Buried Empty Lava Tube Detection With GRAIL Data," AIAA/AAS Astrodynamics Specialist Conference, San Diego, California, August 2014.
  137. Guzzetti, D., Bosanac, N., Folta, D., and Howell, K., "A Framework for Efficient Trajectory Comparisons in the Earth-Moon Design Space," AIAA/AAS Astrodynamics Specialist Conference, San Diego, California, August 2014.
  138. Guzzetti, D., and Howell, K., "Coupled Orbit-Attitude Dynamics in the Three-Body Problem: a Family of Orbit-Attitude Periodic Solutions," AIAA/AAS Astrodynamics Specialist Conference, San Diego, California, August 2014.
  139. Stuart, J., Howell, K., and Wilson, R., "Application of Multi-Agent Coordination Methods to the Design of Space Debris Mitigation Tours," 24th International Symposium on Space Flight Dynamics (ISSFD), Johns Hopkins University Applied Physics Laboratory (APL), Laurel, Maryland, May 5-9, 2014.
  140. Bosanac, N., Howell, K., and Fischbach, E., "Stability of Orbits Near Large Mass Ratio Binary Systems," 2nd IAA Conference on Dynamics and Control of Space Systems, Roma, Italy, March 24-26, 2014.
  141. Folta, D., Bosanac, N., Guzzetti, D., and Howell, K., "An Earth-Moon System Trajectory Design Reference Catalog," 2nd IAA Conference on Dynamics and Control of Space Systems, Roma, Italy, March 24-26, 2014.
  142. Capdevila, L., Guzzetti, D., and Howell, K., "Various Transfer Options from Earth into Distant Retrograde Orbits in the Vicinity of the Moon," AAS/AIAA Space Flight Mechanics Meeting, Santa Fe, New Mexico, January 26-30, 2014.
  143. Harden, G., Haapala, A., Howell, K., and Marchand, B., "Automated Patch Point Placement for Spacecraft Trajectory Targeting," AAS/AIAA Space Flight Mechanics Meeting, Santa Fe, New Mexico, January 26-30, 2014.
  144. Short, C., Blazevski, D., Howell, K., and Haller, G., "Flow Control Segment and Lagrangian Coherent Structure Approaches for Application in Multi-body Problems," AAS/AIAA Space Flight Mechanics Meeting, Santa Fe, New Mexico, January 26-30, 2014.
  145. Stuart, J., Howell, K., and Wilson, R., "Design of End-to-end Trojan Asteroid Rendezvous Tours Incorporating Potential Scientific Value," AAS/AIAA Space Flight Mechanics Meeting, Santa Fe, New Mexico, January 26-30, 2014.
  146. Kakoi, M., Howell, K., and Folta, D., "Access to Mars from Earth-Moon Libration Point Orbits: Manifold and Direct Options," IAF 64th International Astronautical Congress, Beijing, China, September 23-27, 2013.
  147. Haapala, A., Vaquero, M., Pavlak, T., Howell, K., and Folta, D., "Trajectory Selection Strategy for Tours in the Earth-Moon System," AAS/AIAA Astrodynamics Specialist Conference, Hilton Head, South Carolina, August 10-15, 2013.
  148. Schlei, W., Howell, K., Tricoche, X., and Garth, C., "Enhanced Visualization and Autonomous Extraction of Poincaré Map Topology," AAS/AIAA Astrodynamics Specialist Conference, Hilton Head, South Carolina (Best Paper Award for the Conference), August 10-15, 2013.
  149. Héritier, A., and Howell, K., "Dynamical Evolution of Natural Formations in Libration Point Orbits in a Multi-Body Regime," IAF 7th International Workshop of Satellite Constellations and Formation Flying, Lisbon, Portugal, March 13-15, 2013.
  150. Bosanac, N., Howell, K., and Fischbach, E., "Exploring the Impact of a Three-Body Interaction Added to the Gravitational Potential Function in the Restricted Three-Body Problem," 23rd AAS/AIAA Space Flight Mechanics Meeting, Kauai, Hawaii, February 10-14, 2013.
  151. Chappaz, L. and Howell, K., "Trajectory Exploration Within Binary Systems Comprised of Small Irregular Bodies," 23rd AAS/AIAA Space Flight Mechanics Meeting, Kauai, Hawaii, February 10-14, 2013.
  152. Folta, D., Pavlak, T., Haapala, A., and Howell, K., "Preliminary Considerations for Access and Operations in Earth-Moon L1/L2 Orbits," 23rd AAS/AIAA Space Flight Mechanics Meeting, Kauai, Hawaii, February 10-14, 2013.
  153. Stuart J., Howell, K., and Wilson, R., "Automated Design of Propellant-Optimal, End-to-End, Low-Thrust Trajectories for Trojan Asteroid Tours," 23rd AAS/AIAA Space Flight Mechanics Meeting, Kauai, Hawaii, February 10-14, 2013.
  154. Vaquero, M., and Howell, K., "Leveraging Resonant Orbit Manifolds to Design Transfers Between Libration Point Orbits in Multi-Body Regimes," 23rd AAS/AIAA Space Flight Mechanics Meeting, Kauai, Hawaii, February 10-14, 2013.
  155. Stuart, J., and Howell, K., "Autonomously Generated Optimal Low-thrust Rendezvous Tours of the Sun-Jupiter Trojan Asteroids," 23rd International Symposium on Space Flight Dynamics (ISSFD), Jet Propulsion Laboratory, Pasadena, California, October 29-November 2, 2012.
  156. Haapala, A., and Howell, K., "Representations of Higher-Dimensional Poincaré Maps with Application to Spacecraft Trajectory Design," IAF 63rd International Astronautical Congress, Naples, Italy, October 1-5, 2012.
  157. Knutson, A., and Howell, K., "Coupled Orbit and Attitude Dynamics for Spacecraft Comprised of Multiple Bodies in Earth-Moon Halo Orbits," IAF 63rd International Astronautical Congress, Naples, Italy, October 1-5, 2012.
  158. Short, C., and Howell, K., "Lagrangian Coherent Structures in Various Map Representations for Application to Multi-Body Gravitational Regimes," IAF 63rd International Astronautical Congress, Naples, Italy, October 1-5, 2012.
  159. Héritier, A., and Howell, K., "Regions Near the Libration Points Suitable to Maintain Multiple Spacecraft," AIAA/AAS Astrodynamics Specialist Conference, Minneapolis, Minnesota, August 2012.
  160. Pavlak, T., Howell, K., "Strategy for Optimal, Long-Term Stationkeeping of Libration Point Orbits in the Earth-Moon System," AIAA/AAS Astrodynamics Specialist Conference, Minneapolis, Minnesota, August 2012.
  161. Wawrzyniak, G., and Howell, K., "An Adaptive, Receding-Horizon Guidance Strategy for Solar Sail Trajectories," AIAA/AAS Astrodynamics Specialist Conference, Minneapolis, Minnesota, August 2012.
  162. Folta, D., Woodard, M., Pavlak, T., Haapala, A., and Howell, K., "Earth-Moon Libration Stationkeeping: Theory, Modeling, and Operations," 1st IAA/AAS Conference on the Dynamics and Control of Space Systems, Porto, Portugal, March 19-21, 2012.
  163. Vaquero, M., and Howell, K., "Design of Transfer Trajectories Between Resonant Orbits in the Restricted Three-Body Problem with Application to the Earth-Moon System," 1st IAA/AAS Conference on the Dynamics and Control of Space Systems, Porto, Portugal (Best Student Paper in Mission Design and Optimization Award for the Conference), March 19-21, 2012.
  164. Chappaz, L., Melosh, H., Vaquero, M., and Howell, K., "Transfer of Impact Ejecta Material from the Surface of Mars to Phobos and Deimos," 22nd AAS/AIAA Space Flight Mechanics Meeting, Charleston, South Carolina, January 29-February 2, 2012.
  165. Knutson, A., and Howell, K., "Application of Kane's Method to Incorporate Attitude Dynamics into the Circular Restricted Three Body Problem," 22nd AAS/AIAA Space Flight Mechanics Meeting, Charleston, South Carolina, January 29-February 2, 2012.
  166. Schlei, W. and Howell, K., "A Visual Analytics Approach to Preliminary Trajectory Design," 22nd AAS/AIAA Space Flight Mechanics Meeting, Charleston, South Carolina, January 29-February 2, 2012.
  167. Wawrzyniak, G. and Howell, K., "Flight Path Control for Solar Sail Spacecraft," 22nd AAS/AIAA Space Flight Mechanics Meeting, Charleston, South Carolina, January 29-February 2, 2012.
  168. Pavlak, T. and Howell, K., "Evolution of the Out-of-Plane Amplitude for Quasi-Periodic Trajectories in the Earth-Moon System," IAF 62nd International Astronautical Congress, Cape Town, South Africa, October 2011.
  169. Stuart, J. and Howell, K., "Trajectory Tour of the Trojan Asteroids Generated via an Optimal Low-Thrust Algorithm," IAF 62nd International Astronautical Congress, Cape Town, South Africa, October 2011.
  170. Héritier, A. and Howell, K., "Natural Regions Near the Sun-Earth Libration Points Suitable for Space Observations with Large Formations," AAS/AIAA Astrodynamics Specialist Conference, Girdwood, Alaska, August 2011.
  171. Pavlak, T. and Howell, K., "Strategy for Long-Term Libration Point Orbit Stationkeeping in the Earth-Moon System," AAS/AIAA Astrodynamics Specialist Conference, Girdwood, Alaska, August 2011.
  172. Vaquero, M. and Howell, K., "Poincaré Maps and Resonant Orbits in the Circular Restricted Three-Body Problem," AAS/AIAA Astrodynamics Specialist Conference, Girdwood, Alaska, August 2011.
  173. Haapala, A. and Howell, K., "Trajectory Design Using Periapse Poincaré Maps and Invariant Manifolds," 21st AAS/AIAA Space Flight Mechanics Meeting, New Orleans, Louisiana, February 2011.
  174. Short, C., Howell, K., and Tricoche, X., "Lagrangian Coherent Structures in the Restricted Three-Body Problem," 21st AAS/AIAA Space Flight Mechanics Meeting, New Orleans, Louisiana, February 2011.
  175. Rausch, R. and Howell, K., "Semi-Autonomous Stationkeeping of Collocated Geostationary Satellites Using Relative Orbit Control," 6th International Workshop on Satellite Constellation and Formation Flying (IWSCFF 2010), Taipei, Taiwan, November 2010.
  176. Davis, D., and Howell, K., "Trajectory Evolution in the Multi-Body Problem with Applications in the Saturnian System," IAF 61st International Astronautical Congress, Prague, Czech Republic, September 2010.
  177. Wawrzyniak, G., and Howell, K., "Trajectory Control for a Solar Sail Spacecraft in an Offset Lunar Orbit," IAF 61st International Astronautical Congress, Prague, Czech Republic, September 2010.
  178. Folta, D., Woodard, M., Howell, K., Patterson, C., and Schlei, W., "Applications of Multi-Body Dynamical Environments: The ARTEMIS Transfer Trajectory Design," IAF 61st International Astronautical Congress, Prague, Czech Republic, September 2010.
  179. Stuart, J., Ozimek, M., and Howell, K., "Optimal, Low-Thrust, Path-Constrained Transfers between Libration Point Orbits using Invariant Manifolds," AIAA/AAS Astrodynamics Specialist Conference, Toronto, Canada, August 2010.
  180. Wawrzyniak, G., and Howell, K., "Numerical Methods to Generate Solar Sail Trajectories," 2nd International Symposium on Solar Sailing, Brooklyn, New York, July 2010.
  181. Marchand, B., Scarritt, S., Pavlak, T., Howell, K., and Weeks, M., "Investigation of Alternative Return Strategies for Orion Trans-Earth Injection Design Options," 20th AAS/AIAA Space Flight Mechanics Meeting, San Diego, California, February 2010.
  182. Olikara, Z., and Howell, K., "Computation of Quasi-Periodic Invariant Tori in the Restricted Three-body Problem," 20th AAS/AIAA Space Flight Mechanics Meeting, San Diego, California, February 2010.
  183. Davis, D., and Howell, K., "Long-Term Evolution of Trajectories Near the Smaller Primary in the Restricted Problem," 20th AAS/AIAA Space Flight Mechanics Meeting, San Diego, California, February 2010.
  184. Folta, D., Pavlak, T., Howell, K., Woodard, M., and Woodfork, D., "Stationkeeping of Lissajous Trajectories in the Earth-Moon System with Applications to ARTEMIS," 20th AAS/AIAA Space Flight Mechanics Meeting, San Diego, California, February 2010.
  185. Millard, L., and Howell, K., "Agent-Based Modeling Techniques for Control of Satellite Imaging Arrays in Multi-Body Regimes," IAF 60th International Astronautical Congress, Daejeon, Republic of Korea, October 2009.
  186. Grebow, D., Ozimek, M., and Howell, K., "Advanced Modeling of Optimal Low-Thrust Pole-Sitter Trajectories," IAF 60th International Astronautical Congress, Daejeon, Republic of Korea, October 2009.
  187. Ozimek, M., Grebow, D., and Howell, K., "A Collocation Approach for Computing Solar Sail Lunar Pole-Sitter Orbits," AIAA/AAS Astrodynamics Specialists Conference, Pittsburgh, Pennsylvania, August 2009.
  188. Wawrzyniak, G., and Howell, K., "Accessing the Design Space for Solar Sails in the Earth-Moon System," AIAA/AAS Astrodynamics Specialists Conference, Pittsburgh, Pennsylvania, August 2009.
  189. Grebow, D., Ozimek, M., and Howell, K., "Design of Optimal Low-Thrust Lunar Pole-Sitter Missions," AAS/AIAA Space Flight Mechanics Meeting, Savannah, Georgia, February 2009.
  190. Millard, L., and Howell, K., "Decentralized Optimization for Control of Satellite Imaging Formations in Complex Regimes," AAS/AIAA Space Flight Mechanics Meeting, Savannah, Georgia, February 2009.
  191. Vavrina, M., and Howell, K., "Multiobjective Optimization of Low-Thrust Trajectories using a Genetic Algorithm Hybrid," AAS/AIAA Space Flight Mechanics Meeting, Savannah, Georgia, February 2009.
  192. Wawrzyniak, G., and Howell, K., "The Solar Sail Lunar Relay Station: An Application of Solar Sails in the Earth-Moon System," IAF 59th International Astronautical Congress, Glasgow, Scotland, October 2008.
  193. Howell, K., and Davis, D., "Spacecraft Trajectory Design Strategies Based on Close Encounters with a Smaller Primary in a 4-body Model," AAS/AIAA Astrodynamics Specialists Conference, Honolulu, Hawaii, August 2008.
  194. Millard, L., and Howell, K., "Control of Spacecraft Occulter Arrays in Multi-Body Regimes," AAS/AIAA Astrodynamics Specialists Conference, Honolulu, Hawaii, August 2008.
  195. Ozimek, M., Grebow, D. and Howell, K., "Solar Sails and Lunar South Pole Coverage," AAS/AIAA Astrodynamics Specialists Conference, Honolulu, Hawaii, August 2008.
  196. Vavrina, M., and Howell, K., "Global Low-Thrust Trajectory Optimization through Hybridization of a Genetic Algorithm and a Direct Method," AAS/AIAA Astrodynamics Specialists Conference, Honolulu, Hawaii, August 2008.
  197. Millard, L., and Howell, K., "Optimal Reconfiguration Maneuvers for Spacecraft Imaging Arrays in Multi-Body Regimes," IAF 58th International Astronautical Congress, Hyderabad, India, September 2007.
  198. Howell, K., and Ozimek, M., "Low-Thrust Transfers in the Earth-Moon System Including Applications to Libration Point Orbits," AAS/AIAA Astrodynamics Specialists Conference, Mackinac Island, Michigan, August 2007.
  199. Davis, D., Patterson, C., and Howell, K., "Solar Gravity Perturbations to Facilitate Long-Term Orbits: Application to Cassini," AAS/AIAA Astrodynamics Specialists Conference, Mackinac Island, Michigan, August 2007.
  200. Patterson, C., Kakoi, M., Howell, K., Yam, C., Longuski, J., "500-Year Eccentric Orbits for the Cassinni Spacecraft within the Saturnian System," AAS/AIAA Astrodynamics Specialists Conference, Mackinac Island, Michigan, August 2007.
  201. Yam, C., Davis, D., Longuski, J., and Howell, K., "Saturn Impact Trajectories for Cassini End-of-Life," AAS/AIAA Astrodynamics Specialists Conference, Mackinac Island, Michigan, August 2007.
  202. Howell, K., Grebow, D., and Olikara Z., "Design Using Gauss' Perturbing Equations with Applications to Lunar South Pole Coverage," AAS/AIAA Space Flight Mechanics Meeting, Sedona, Arizona, January 2007.
  203. Millard, L., and Howell, K., "Control of Interferometric Spacecraft Arrays for (u,v) Plane Coverage in Multi-Body Regimes," AAS/AIAA Space Flight Mechanics Meeting, Sedona, Arizona, January 2007.
  204. Howell, K., and Millard, L., "Control of Satellite Imaging Formations in Multi-Body Regimes," IAF 57th International Astronautical Congress, Valencia, Spain, October 2006.
  205. Grebow, D., Ozimek, M., Howell, K., and Folta, D., "Multi-Body Orbit Architectures for Lunar South Pole Coverage," AAS/AIAA Space Flight Mechanics Meeting, Tampa, Florida, January 2006.
  206. Howell, K., and Kakoi, M., "Transfers Between the Earth-Moon and Sun-Earth Systems Using Manifolds and Transit Orbits," IAF 56th International Astronautical Congress, Fukuoka, Japan, October 2005.
  207. Marchand, B., Howell, K., and Betts, J., "Discrete Optimal Control for S/C Formation Keeping Near the Libration Points," AAS/AIAA Astrodynamics Conference, Lake Tahoe, California, August 2005.
  208. Howell, K., and Marchand, B., "Formations Near the Libration Points: Design Strategies Using Natural and Non-Natural Arcs," 2nd International Symposium on Formation Flying Missions and Technologies, Washington, D. C., September 2004.
  209. Folta, D., Hartman, K., Howell, K., and Marchand, B., "Formation Control of the MAXIM L2 Libration Point Mission," AIAA/AAS Astrodynamics Conference, Providence, Rhode Island, August 2004.
  210. Howell, K., Beckman, M., Patterson, C., and Folta, D., "Representations of Invariant Manifolds for Applications in Three-Body Systems," AAS/AIAA Space Flight Mechanics Meeting, Maui, Hawaii, February 8-11, 2004.
  211. Marchand, B., and Howell, K., "Aspherical Formations Near the Libration Points in the Sun-Earth/Moon Ephemeris System," AAS/AIAA Space Flight Mechanics Meeting, Maui, Hawaii, February 8-11, 2004.
  212. Howell, K., and Marchand, B., "Design and Control of Formations Near Libration Points in the Sun-Earth/Moon Ephemeris System," Flight Mechanics Symposium, Mission Engineering and Systems Analysis Division, NASA GSFC, Greenbelt, Maryland, October 28-30, 2003.
  213. Marchand, B., and Howell, K., "Formation Flight Near L2 in the Sun-Earth/Moon Ephemeris System Including Solar Radiation Pressure," AAS/AIAA Astrodynamics Conference, Big Sky, Montana, August 2003.
  214. Howell, K., and Marchand, B., "Control Strategies for Formation Flight in the Vicinity of a Libration Point Orbit," 13th AAS/AIAA Space Flight Mechanics Meeting, Ponce, Puerto Rico, February 9-13, 2003.
  215. Howell, K., "Dynamics around the Libration Points: Transfers to L1 and L2 using Lunar Gravity," International Conference on Libration Point Orbits and Applications, Parador d'Aiguablava, Girona, Spain, June 10-14, 2002.
  216. Barden, B., Wilson, R., Howell, K., and Marchand, B., "Summer Launch Options for the Genesis Mission," AAS/AIAA Astrodynamics Specialists Conference, Quebec City, Canada, July 30-August 2, 2001.
  217. Guzmán, J., and Howell, K., "Periodic Orbits in the Vicinity of L1 and L2 in the Coherent Restricted Four-Body Problem," GSFC Guidance, Navigation, and Control Center, Flight Mechanics Symposium, NASA Goddard Space Flight Center, Greenbelt, Maryland, June 2001.
  218. Folta, D., Cooley, S., and Howell, K., "Trajectory Design Strategies for the NGST L2 Libration Point Mission," AAS/AIAA Spaceflight Mechanics Meeting, February 2001.
  219. Howell, K., Guzmán, J., and Anderson, J., "Trajectory Arcs with Lunar Encounters for Transfers to Small Amplitude L2 Lissajous Orbits," AAS/AIAA Spaceflight Mechanics Meeting, February 2001.
  220. Howell, K., and Guzmán, J., "Spacecraft Trajectory Design in the Context of a Coherent Restricted Four-Body Problem with Application to the MAP Mission," IAF 51st International Astronautical Congress, Rio de Janeiro, Brazil, October 2000.
  221. Williams, K., Barden, B., Howell, K., Lo, M., and Wilson, R., "GENESIS Halo Orbit Stationkeeping Design," International Symposium: Space Flight Dynamics, Biarritz, France, June 2000.
  222. Howell, K., Marchand, B., and Lo, M., "Temporary Satellite Capture of Short-Period Jupiter Family Comets From the Perspective of Dynamical Systems," AAS/AIAA Space Flight Mechanics Meeting, Clearwater, Florida (Best Paper Award for the Conference), January 2000.
  223. Howell, K., and Barden, B., "Trajectory Design and Stationkeeping for Multiple Spacecraft in Formation Near the Sun-Earth L1 Point," IAF 50th International Astronautical Congress, Amsterdam, The Netherlands, October 1999.
  224. Wilson, R., Howell, K., and Lo, M., "Optimization of Insertion Cost for Transfer Trajectories to Libration Point Orbits," AAS/AIAA Astrodynamics Specialist Conference, Girdwood, Alaska, August 1999.
  225. Barden, B., and Howell, K., "Dynamical Issues Associated with Relative Configurations of Multiple Spacecraft Near the Sun-Earth/Moon L1 Point," AAS/AIAA Astrodynamics Specialist Conference, Girdwood, Alaska, August 1999.
  226. Howell, K., and Campbell, E., "Three-Dimensional Periodic Solutions That Bifurcate From Halo Families in the Circular Restricted Three-Body Problem," AAS/AIAA Space Flight Mechanics Meeting, Breckenridge, Colorado, February 1999.
  227. Lo, M., Williams, B., Bollman, W., Han, D., Hahn, Y., Bell, J., Hirst, E., Corwin, R., Hong, P., Howell, K., Barden, B., and Wilson, R., "GENESIS Mission Design," AIAA/AAS Astrodynamics Specialist Conference, Boston, Massachusetts, August 1998.
  228. Howell, K., "Families of Orbits in the Vicinity of the Collinear Libration Points," AIAA/AAS Astrodynamics Specialist Conference, Boston, Massachusetts, August 1998.
  229. Guzmán, J., Cooley, D., Howell, K., and Folta, D., "Trajectory Design Strategies for Libration Point Missions that Incorporate Invariant Manifolds and SWINGBY," AAS/GSFC International Symposium on Space Flight Dynamics, Greenbelt, Maryland, May 1998.
  230. Barden, B., and Howell, K., "Formation Flying in the Vicinity of Libration Point Orbits," AAS/AIAA Spaceflight Mechanics Meeting, February 1998.
  231. Gómez, G., Howell, K., Masdemont, J., and Simó, C., "Station-Keeping Strategies for Translunar Libration Point Orbits," AAS/AIAA Spaceflight Mechanics Meeting, February 1998.
  232. Howell, K., Barden, B., Wilson, R., and Lo, M., "Trajectory Design Using a Dynamical Systems Approach with Application to GENESIS," AAS/AIAA Astrodynamics Specialists Conference, August 1997.
  233. Howell, K., "Using Manifolds to Generate Trajectories for Libration Point Missions," 4th SIAM Conference on Applications of Dynamical Systems, Snowbird, Utah, May 1997.
  234. Ely, T., and Howell, K., "East-West Stationkeeping of Satellite Orbits with Resonant Tesseral Harmonics," AAS/AIAA Space Flight Mechanics Meeting, Huntsville, Alabama, February 1997.
  235. Howell, K., "Introducing Group Learning into a 'Lecture' Class," AIAA 35th Aerospace Sciences Meeting, Reno, Nevada (Invited), January 1997.
  236. Ely, T., and Howell, K., "Tesseral Resonance Overlap Including the Effects of Luni-Solar Perturbations," AIAA/AAS Astrodynamics Specialist Conference, San Diego, California, July 1996.
  237. Lo, M., Howell, K., and Barden, B., "Mission Design for the FIRE and PSI Missions," AIAA/AAS Astrodynamics Specialist Conference, San Diego, California, July 1996.
  238. Barden, B., Howell, K., and Lo, M., "Application of Dynamical Systems Theory to Trajectory Design for a Libration Point Mission," AIAA/AAS Astrodynamics Specialist Conference, San Diego, California, July 1996.
  239. Howell, K., and Wilson, R., "Trajectory Design in the Sun-Earth-Moon System Using Multiple Lunar Gravity Assists," AIAA/AAS Astrodynamics Specialist Conference, San Diego, California, July 1996.
  240. Ely, T., and Howell, K., "Issues Concerning East-West Stationkeeping of Satellite Orbits with Resonant Tesseral Harmonics," AAS/AIAA Astrodynamics Specialist Conference, Halifax, Nova Scotia, Canada, August 1995.
  241. Ely, T., and Howell, K., "Resonance Overlap of Tesseral Harmonics in the Artificial Earth Satellite Problem," SIAM Dynamical Systems Conference, Snowbird, Utah, May 1995.
  242. Ely, T., and Howell, K., "Long Term Evolution of Artificial Satellite Orbits in Resonance with the Second-Degree Tesseral Harmonic," AAS/AIAA Spaceflight Mechanics Meeting, February 1995.
  243. Howell, K., and Keeter, T., "Station-Keeping Strategies for Libration Point Orbits: Target Point and Floquet Mode Approaches," AAS/AIAA Spaceflight Mechanics Meeting, February 1995.
  244. Wilson, R., and Howell, K., "A Design Concept for Multiple Lunar Swingby Trajectories," AIAA/AAS Astrodynamics Specialist Conference, Scottsdale, Arizona, August 1994.
  245. Howell, K., Mains, D., and Barden, B., "Transfer Trajectories from Earth Parking Orbits to Sun-Earth Halo Orbits," AAS/AIAA Space Flight Mechanics Meeting, February 1994.
  246. Howell, K., and Barden, B., "Using Stable Manifolds to Generate Transfers from Earth to Sun-Earth Libration Point Orbits," Advances in Nonlinear Astrodynamics Conference, The Geometry Center, University of Minnesota, Minneapolis, Minnesota (Invited), November 1993.
  247. Howell, K., and Hiday, L., "Time-Free Transfers Between Libration-Point Orbits in the Elliptic Restricted Problem," IAF 43rd International Astronautical Congress, Washington D. C., September 1992.
  248. Howell, K. C., and Hiday, L. A., "Time-Free Transfers Between Libration-Point Orbits in the Elliptic Restricted Problem," 43rd International Astronautical Federation, Washington, DC, August 28 - September 5, 1992.
  249. Hiday, L., and Howell, K., "Impulsive Time-Free Transfers Between Halo Orbits," AIAA/AAS Astrodynamics Specialist Conference, Hilton Head Island, South Carolina, August 1992.
  250. Hiday, L., and Howell, K., "Transfers Between Libration-Point Orbits in the Elliptic Restricted Problem," AAS/AIAA Space Flight Mechanics Meeting, Colorado Springs, Colorado, February 1992.
  251. Gordon, S., and Howell, K., "Orbit Determination Error Analysis and Comparison of Station-Keeping Costs for Lissajous and Halo-Type Libration Point Orbits," AAS/AIAA Space Flight Mechanics Meeting, Colorado Springs, Colorado, February 1992.
  252. Howell, K., and Pernicka, H., "A Station-Keeping Method for Libration Point Trajectories," AIAA/AAS Astrodynamics Specialist Conference, Portland, Oregon, August 1990.
  253. Pernicka, H., and Howell, K., "Numerical Determination of Libration Point Trajectories with Out-of-Plane Maneuvers to Avoid the Solar Exclusion Zone," AAS/NASA International Symposium on Orbital Mechanics and Mission Design, April 24-27, 1989.
  254. Marsh, S., and Howell, K., "Double Lunar Swingby Trajectory Design," AIAA/AAS Astrodynamics Specialist Conference, Minneapolis, Minnesota, August 1988.
  255. Shoults, G., and Howell, K., "Filtering Techniques for a Non-Gravitational Acceleration with Application to GPS," AIAA/AAS Astrodynamics Specialist Conference, Williamsburg, Virginia, August 1986.
  256. Howell, K., and Baxter, M., "Some Considerations of Actuator Dynamics in the Attitude Control of a Flexible Beam," AIAA/AAS Astrodynamics Specialist Conference, Williamsburg, Virginia, August 1986.
  257. Howell, K., and Pernicka, H., "Numerical Determination of Lissajous Trajectories in the Restricted Three-Body Problem," AIAA/AAS Astrodynamics Specialist Conference, Williamsburg, Virginia, August 1986.
  258. Howell, K., and Spencer, D., "Periodic Orbits in the Restricted Four-Body Problem," IAF 36th International Astronautical Congress, Stockholm, Sweden, October 1985.
  259. Howell, K., "Effects of Eccentricity on Halo Orbits in the Restricted Three-Body Problem," AAS/AIAA Astrodynamics Specialist Conference, Lake Placid, New York, August 1983.
  260. Howell, K., and Breakwell, J., "Almost Rectilinear Halo Orbits," AIAA 20th Aerospace Sciences Conference, Orlando, Florida, January 1982.
  261. Howell, K., "Three-Dimensional, Periodic, 'Halo' Orbits," AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, Nevada, August 1981.
  262. Jones, J., Yen, C., and Howell, K., "Near-Comet Trajectory Design," AIAA Aerospace Sciences Meeting, Pasadena, California, January 1980.