The Rosetta Encounters with (2867) Steins and (21) Lutetia - An Overview (Invited)

Details The Rosetta Encounters with (2867) Steins and (21) Lutetia - An Overview (Invited) The Rosetta Encounters with (2867) Steins and (21) Lutetia - An Overview (Invited)

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p14b..01s&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #P14B-01

Physics

[6000] Planetary Sciences: Comets And Small Bodies, [6205] Planetary Sciences: Solar System Objects / Asteroids

Scientific paper

The International Rosetta Mission is one of ESA’s Cornerstone Missions and on its way to rendezvous with comet 67P/Churyumov-Gerasimenko in 2014. On cruise to the main target the spacecraft has already performed close fly-bys at two main-belt asteroids. In 2008, Rosetta encountered the small (5-km sized) E-type asteroid (2867) Steins. Closest approach occurred at a distance of 802.6 km on 5 September 2008, 18:38:19 UT. For its second asteroid encounter in 2010, a much larger asteroid was selected as the target, the 100-km sized asteroid (21) Lutetia. Rosetta passed this largest asteroid encountered by a spacecraft up to now at a distance of 3160 km on 10 July 2010, 15:44:57 UT. For both close fly-bys a strategy was arranged that allowed for continuous observations of each asteroid before, during and after closest approach whilst the spacecraft passed through phase angle zero. Most of the scientific instruments on board Rosetta were switched on for investigations of these asteroids and their surrounding environment. Imaging and spectral observations were obtained covering wavelengths from the UV to sub-mm. In addition a number of in-situ measurements were performed of the asteroids themselves as well as their direct environment. A detailed overview of the two Rosetta asteroid fly-bys will be given.

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