Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989hmps....3..269m&link_type=abstract
In its The Hipparcos Mission. Prelaunch Status. Volume 3: The Data Reductions p 269-281 (SEE N90-13548 05-18)
Astronomy and Astrophysics
Astronomy
4
Asteroids, Astrometry, Data Reduction, Natural Satellites, Planet Ephemerides, European Space Programs, Hipparcos Satellite, Image Processing, Light Curve, Parallax, Planetary Orbits
Scientific paper
The reduction considerations needed for the minor planets, taking into account their proximity, high apparent motion, and their surface properties, are summarized. Of the 60 bright minor planets, 40 show the most favorable conditions to be observed by Hipparcos satellite. The reasons for, the conditions of, and what can be expected from, the minor planets observations, are presented. The image of a minor planet in the focal plane of Hipparcos, and the modulation curves for a star and for a minor planet are included. The importance of light curves obtained from earth measurement to improve the ephemerides of minor planets is underlined. Concerning natural satellites, only Europa and Titan are adequately modulated by Hipparcos.
Lindegren Lennart
Morando Bruno
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