Issue |
A&A
Volume 435, Number 3, June I 2005
|
|
---|---|---|
Page(s) | 1173 - 1179 | |
Section | Planets and planetary systems | |
DOI | https://doi.org/10.1051/0004-6361:20042264 | |
Published online | 13 May 2005 |
Ephemerides of the outer Jovian satellites
Sternberg astronomical institute, 13 Universitetskij prospect, 119992 Moscow, Russia e-mail: emelia@sai.msu.ru
Institut de mécanique céleste et de calcul des éphémérides – Observatoire de Paris, UMR 8028 du CNRS, 77 avenue Denfert-Rochereau, 75014 Paris, France
Received:
27
October
2004
Accepted:
20
January
2005
The results of the determination of orbits for 54 outer satellites
of Jupiter based on all available observations of these satellites
are presented. The problem was solved using numerical
integration method applied to the equations of satellite motion.
After initial conditions of integration were refined,
the residuals of observations from theory were obtained.
Values of root-mean-square residuals for the eight satellites
JVI–JXIII
in right ascensions and declinations were found to be in the range
.
The same parameters for the new outer Jovian satellites are
in the range
–
.
During the process of numerical integration of equations, the series
based on the Chebychev polynomials for the satellite cordinates were defined.
The series are used to calculate the apparent positions of satellites
at the ephemerides.
This ephemerides tool has broad capabilities including
the possibility of obtaining residuals for a large
series of user observations.
The satellite motion model and numerical integration method adopted
in this work were compared with the methods used
at the Jet Propulsion Laboratory. This comparison of the apparent
positions of satellites has shown that the differences between
the two models are not greater than
in a 100-year interval.
The residuals of satellite observations are similar to those
obtained at JPL.
Key words: planets and satellites: general / planets and satellites: individual: Jupiter
© ESO, 2005
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