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Dawn orbit determination team : trajectory modeling and reconstruction processes at Vesta

Show simple item record Abrahamson, Matt Ardito, Alessandro Han, Don Haw, Robert Kennedy, Brian Mastrodemos, Nicholas Nandi, Sumita Park, Ryan Rush, Brian Vaughan, Andrew 2013-04-23T16:07:34Z 2013-04-23T16:07:34Z 2013-02-10
dc.identifier.citation 23rd AAS/AIAA Spaceflight Mechanics Meeting, Kauai, Hawaii, February 10-14, 2013. en_US
dc.identifier.clearanceno 12-4794
dc.description.abstract The NASA Dawn spacecraft was launched on September 27, 2007 on a mission to study the asteroid belt’s two largest objects, Vesta and Ceres. It is the first deep space orbiting mission to demonstrate solar-electric ion propulsion, providing the necessary delta-V to enable capture and escape from two extraterrestrial bodies. At this time, Dawn has completed its science campaign at Vesta and is currently on its journey to Ceres, where it will arrive in mid-2015. The spacecraft spent over a year in orbit around Vesta from July 2011 through August 2012, capturing science data during four dedicated orbit phases. In order to maintain the reference orbits necessary for science and enable the transfers between those orbits, precise and timely orbit determination was required. The constraints associated with low-thrust ion propulsion coupled with the relatively unknown a priori gravity and rotation models for Vesta presented unique challenges for the Dawn orbit determination team. While [1] discusses the prediction performance of the orbit determination products, this paper discusses the dynamics models, filter configuration, and data processing implemented to deliver a rapid orbit determination capability to the Dawn project. 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, 2012. en_US
dc.subject asteroids en_US
dc.subject Dawn mission en_US
dc.subject Vesta en_US
dc.subject Orbit determination en_US
dc.subject navigation en_US
dc.subject trajectory en_US
dc.title Dawn orbit determination team : trajectory modeling and reconstruction processes at Vesta en_US
dc.title.alternative 23 en_US
dc.type Preprint en_US
dc.subject.NASATaxonomy Spacecraft Design, Testing and Performance en_US

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