| Issue |
A&A
Volume 403, Number 2, May IV 2003
|
|
|---|---|---|
| Page(s) | 749 - 756 | |
| Section | Planets and planetary systems | |
| DOI | https://doi.org/10.1051/0004-6361:20030373 | |
| Published online | 06 May 2003 | |
Photometry with a periodic grid*
II. Results for J2 Europa and S6 Titan
IMCCE, UMR CNRS 8028, Paris Observatory, 77 Av. Denfert Rochereau 75014 Paris, France
Corresponding author: hestro@imcce.fr
Received:
20
December
2002
Accepted:
19
February
2003
The Hipparcos satellite successfully gathered astrometric and photometric
information for a few solar system objects including natural satellites.
In contrast to the case for asteroids, the Hipparcos main-mission does
not provide the photometry – in the conventional sense – of planetary satellites.
Nevertheless, valuable
photometric results can be obtained, such as a modelling of the centre-to-limb
darkening of the bodies. We present in this paper results obtained for the photometry
with a periodic grid of the satellites J2 Europa and S6 Titan from the Hipparcos
main mission and within the FAST data-reduction Consortium. The Minnaert
parameter of S6 Titan is found to be 
, and for J2 Europa,
.
Brightness variations with orbital phase are also given for Europa.
Key words: planets and satellites: general / planets and satellites: individual: J2 Europa, S6 Titan
© ESO, 2003
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