Contents. planet: 4 - Mars satellites: M1 - Phobos: 71, M2 - Deimos: 51 total number: 122 type: absolute dates: 1971-1971 observatory: 786 - U.S. Naval Obs., Washington Reference. Robert V., Lainey V., Pascu D., Arlot J.-E., De Cuyper J.-P., Dehant V., Thuillot W. (2014) Astrometric observations of Phobos and Deimos during the 1971 opposition of Mars. Astronomy and Astrophysics. V. 572. P. A104. 2014A&A___572A_104R Informations. relative to: absolute reference frame: astrometric centre of frame: topocenter epoch of equinox: J2000 time scale: TDB reduction: UCAC4 star catalog coordinates: absolute diff. refraction: no information receptor: CCD telescope: 26-inch refractor observers: D. Pascu data included in standard data file: yes Comments. no information Format. 1. Number of satellite (N sat): 1 - Phobos, 2 - Deimos 2. Date of observation, JD, TDB 3. Right ascension (degrees) 4. Declination (degrees) -------------------------------------------- N Date R.A Decl sat JD, TDB deg deg --------------------------------------------