Estimates of the physical parameters of remote planetary satellites |
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| Authors: | N V Emel’yanov V S Ural’skaya |
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| Institution: | 1.Sternberg Astronomical Institute,Moscow,Russia;2.Institute of Celestial Mechanics and Computation of Ephemerides,Observatory of Paris,Paris,France |
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| Abstract: | Since 1998, 97 new remote satellites of Jupiter, Saturn, Uranus, and Neptune have been discovered. Since their brightness
is rather weak, it is difficult to perform their photometry and determine their physical parameters. For 27 satellites from
this group, different authors carried out special photometric investigations. For the other 70 satellites, the magnitudes
accompanying the results of astrometric observations published in Minor Planet Circulars (MPC) are the only photometric data. In the present study, the photometric model parameters for all of the 97 remote satellites
have been determined. From the hypothetic values of albedo and material density of the satellites, their sizes and gravitation
parameters have been estimated. The whole volume of the obtained results is available in the database of the natural planetary
satellites (NSDB) (Arlot and Emelyanov, 2009) published on the Internet (). |
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