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Design and execution of Dawn HAMO to LAMO transfer at Ceres

Show simple item record Grebow, Daniel J. Kennedy, Brian M. Han, Dongsuk Whiffen, Gregory J. 2019-05-30T21:24:22Z 2019-05-30T21:24:22Z 2016-09-12
dc.identifier.citation AIAA/AAS Astrodynamics Specialist Conference, Long Beach, California, September 12-15, 2016 en_US
dc.identifier.clearanceno 16-3758
dc.description.abstract On October 23, 2015, the Dawn spacecraft left the High Altitude Mapping Orbit (HAMO) around Ceres and began its final decent to the Low Altitude Mapping Orbit (LAMO), arriving on December 15. The transfer between the two science orbits, a tight spiraling trajectory with over 100 revolutions, required the operations team to perform weekly maneuver designs for a period of 50 days. While the first six weeks of the transfer executed as planned, unexpectedly the spacecraft incurred a multi-sigma delivery error to the final science orbit that was subsequently clean-up at the first orbit maintenance maneuver. In this paper we discuss the design architecture for the transfer in detail, including challenges the team faced in flying the transfer and lessons learned. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2016 en_US
dc.title Design and execution of Dawn HAMO to LAMO transfer at Ceres en_US
dc.type Preprint en_US

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