Volume 391, Number 3, September I 2002
|Page(s)||1123 - 1132|
|Section||Celestial mechanics and astrometry|
|Published online||09 August 2002|
Asteroids observations with the Hubble Space Telescope FGS*
I. Observing strategy, and data analysis and modeling process
IMCCE, UMR CNRS 8028, Observatoire de Paris, 77 Av. Denfert Rochereau, 75014 Paris, France
2 Osservatorio Astronomico di Torino (OATo), Strada Osservatorio 20, 10025 Pino Torinese (TO), Italy
Corresponding author: D. Hestroffer, firstname.lastname@example.org
Accepted: 28 May 2002
Five main belt asteroids and one Trojan – selected mainly on the basis of their possible binary nature as deduced from light curve morphology – have been observed with the Fine Guidance Sensors (FGS#3 and FGSR#1) of the Hubble Space Telescope ( HST). In this first paper we present the selection and observation strategy, data reduction and analysis. A careful analysis of the precision for derived parameters is also given. The HST/FGS proves to be valuable in determining asteroid sizes, shapes and spin axis orientations, and also to identify nearly-contact binary systems.
Key words: minor planets, asteroids / methods: observational
© ESO, 2002
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