EDP Sciences
Free access
Volume 487, Number 2, August IV 2008
Page(s) 755 - 758
Section Celestial mechanics and astrometry
DOI http://dx.doi.org/10.1051/0004-6361:200809498
Published online 16 June 2008

A&A 487, 755-758 (2008)
DOI: 10.1051/0004-6361:200809498

Phobos and Deimos CCD observations

C. H. Veiga

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 $\sigma$ = 0$\farcs$079 and $\sigma$ = 0$\farcs$072.

Key words: celestial mechanics -- astrometry -- ephemerides

© ESO 2008