| Issue |
A&A
Volume 487, Number 2, August IV 2008
|
|
|---|---|---|
| Page(s) | 755 - 758 | |
| Section | Celestial mechanics and astrometry | |
| DOI | https://doi.org/10.1051/0004-6361:200809498 | |
| Published online | 16 June 2008 | |
Phobos and Deimos CCD observations *,**
Observatório Nacional, Rua General José Cristino 77, Bairro Imperial de São Cristóvão Cep:20921-400 Rio de Janeiro, Brazil Coordenação de Astronomia e Astrofísica e-mail: cave@on.br
Received:
1
February
2008
Accepted:
14
May
2008
Aims. This paper give positions of Martian satellites system from CCD observations obtained at the Cassegrain focus of a 1.6 m reflector for the years 1995 and 2003.
Methods. These positions were reduced using the scale and orientation parameters, determined from star field positions of Uranus and Pluto systems' observations that were made in the same night as Mars observations.
Results. They are compared with the theoretically calculated positions from JPL Development planetary Ephemeris – DE405. The standard deviations of the residuals, observed minus calculated
positions, right ascension and declination of Phobos and Deimos,
respectively are σ = 0
079 and σ = 0072.
Key words: celestial mechanics / astrometry / ephemerides
© ESO, 2008
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