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Orbit transfers for Dawn’s Vesta operations : navigation and mission design experience

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dc.contributor.author Han, Dongsuk
dc.date.accessioned 2013-04-23T17:43:09Z
dc.date.available 2013-04-23T17:43:09Z
dc.date.issued 2012-10-29
dc.identifier.citation 23rd International Symposium on Space Flight Dynamics, Pasadena, California, October 29 - November 2, 2012 en_US
dc.identifier.clearanceno 12-2167
dc.identifier.uri http://hdl.handle.net/2014/43029
dc.description.abstract Dawn, a mission belonging to NASA’s Discovery Program, was launched on September 27, 2007 to explore main belt asteroids in order to yield insights into important questions about the formation and evolution of the solar system. From July of 2011 to August of 2012, the Dawn spacecraft successfully returned valuable science data, collected during the four planned mapping orbits at its first target asteroid, Vesta. Each mapping orbit was designed to enable a different set of scientific observations. Such a mission would have been impossible without the low thrust ion propulsion system (IPS). Maneuvering a spacecraft using only the IPS for the transfers between the mapping orbits posed many technical challenges to Dawn’s flight team at NASA’s Jet Propulsion Laboratory. Each transfer needs a robust plan that accounts for uncertainties in maneuver execution, orbit determination, and physical characteristics of Vesta. This paper discusses the mission design and navigational experience during Dawn’s Vesta operations. Topics include requirements and constraints from Dawn’s science and spacecraft teams, orbit determination and maneuver design and building process for transfers, developing timelines for thrust sequence build cycles, and the process of scheduling very demanding coverage with ground antennae at NASA’s Deep Space Network. 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 Dawn en_US
dc.subject Vesta en_US
dc.subject navigation en_US
dc.subject ion propulsion system en_US
dc.subject low thrust en_US
dc.subject small body en_US
dc.title Orbit transfers for Dawn’s Vesta operations : navigation and mission design experience en_US
dc.type Preprint en_US
dc.subject.NASATaxonomy Spacecraft Instrumentation and Astrionics en_US


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