The Rosetta Target Asteroids

Details The Rosetta Target Asteroids The Rosetta Target Asteroids

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.1011f&link_type=abstract

American Astronomical Society, DPS meeting #28, #10.11; Bulletin of the American Astronomical Society, Vol. 28, p.1098

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Scientific paper

The final selection of the two Rosetta target asteroids will be done in a successive phase of the Rosetta project development, when the engineering parameters will be frozen. That allows the planetary science community to discuss in order to help the ESA Rosetta Project in the selection process. This poster presents the today scenario of the Rosetta target asteroids and the related available data base. The Rosetta mission baseline includes the fly--by of the asteroids 3840 Mimistrobell and 140 Siwa or 2703 Rodari. Barucci and Lazzarin (1995, Icarus 118, 216) and Barucci et al. (1996, in preparation), on the basis of the spectra of these objects obtained at ESO 1.5m and CFHT 3.6m telescopes, classify Mimistrobell as a S--type asteroid and Siwa as a C/D type asteroid. The Rodari's spectrum is under reduction. The spectra of several other asteroid possible fly--by candidates, if the launch date is changed (see the list in the Rosetta phase A Report, ESA SCI(93)7), have been also obtained (Barucci et al., 1996, in preparation). Only the lightcurve of 1992 Galvarino, one of the objects of this complementary list, is available (Birlan et al., 1996, PSS 44, 555). The authors together with the Rosetta mission trajectory definition team at ESOC will examine the possibility to add new ``more primitive'' candidate asteroids, starting a search of the objects which will require some more resources to be flown--by. We urge the community to devote some observational time to complete this data base including new candidates. The EARN (European Asteroid Research Node) in Berlin will open a section on the Rosetta target asteroids and all the observers are invited to feed this data base.

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