=============================================================================== CONTENTS OF THE DIRECTORY This directory contains observational data concerning the positions of the satellites of Mars from 1877 to 1988. One will find: 1) - the file obs_mars_nsdb.dat Contents - file containing 7217 available observations of positions on 36 opposi- tions of Mars since August 12, 1877 to November 26, 1988, - these observations are made by 67 observers from 34 observatories. - 318 observations made by D. Pascu are not include in this file. If you want obtained them, you write to the author with this e-mail address, U.S. Naval observatory 34th st and Mass. Ave. NW Washington D.C. 20390 USA e-mail:"pas@cygnus.usno.navy.mil" The periods of these observations are: . 1967 April, 17 to 1967 April, 29 . 1969 May, 24 to 1969 June, 8 . 1971 August, 13 to 1971 September, 5 . 1982 March, 25 . 1984 May, 11 . 1986 July, 5 to 1986 July, 24 . 1988 September, 17 to 1988 October, 9 - It provide, . Observation time (UTC), Not light-time corrected, with the form year, month, day, hours, minutes, seconds, . codes for the origin of the coordinates are: 0, relative to Mars 1, relative to Phobos . 1st observation from the satellite number 1 (seconds of arc or degrees if position angle) or "-" if not observed, . 1st observation from the satellite number 2 (seconds of arc or degrees if position angle) or "-" if not observed, . 2nd observation from the satellite number 1 (seconds of arc or degrees if position angle) or "-" if not observed, . 2nd observation from the satellite number 2 (seconds of arc or degrees if position angle) or "-" if not observed, . sigma noise in 1st obs. from the sat.1 (seconds of arc) or "-" if not observed, . sigma noise in 1st obs. from the sat.2 (seconds of arc) or "-" if not observed, . sigma noise in 2nd obs. from the sat.1 (seconds of arc) or "-" if not observed, . sigma noise in 2nd obs. from the sat.2 (seconds of arc) or "-" if not observed, . plate scale unknown in the present time, . code of the name of observer, . number of the series, . Opposition number (1877 = 1, 1988 = 53) . code of the observatory, . Obs. type - separation and/or position angle (degrees) - differential R.A.(*cosine(dec.)) (arseconds) - and/or differential declination (arseconds) - Delta a or Delta d (arseconds) . Ref. system, 1 = true equator and equinox of date 2 = mean equator and equinox of B1900 3 = mean equator and equinox of B1950 4 = mean equator and equinox of J2000 Reference These observations are extracted from, - Morley, T.A.: 1989, A catalogue of the ground-based astrometric observations of the Martian satellites, 1877-1982, Astron. Astrophys. Suppl. Ser. 77, 209-226. - Shor V.A., 1976: Motion of the Martian satellites from 1877 to 1973 and new systems of their orbital parameters (in Russian). Institut Teoreticheskoi Astronomii, Trudy. N. 15. P. 91-113. - Shor V.A.. 1989: Some results of Mars' satellite observational campaign in 1988. Preprint Sternberg State Astronomical Institute, Moscow, No.2, P. 13-18. Preprint of Sternberg Astronomical Institute, Moscow, No.2, 13-18. - Christie W, Erck W, Pritchard C: 1878, English observations of the satellites of Mars, 1877. Monthly notices of the Royal astronomical society, vol. 38. n. 6. p. 361-366. - Young, C.A.: 1880, Observations of the satellites of Mars at Pricenton, U.S. The Observatory, vol. 3. n. 33, p. 270-271. - Henry Paul, Henry Prosper, 1884: Observations faites a l'Observatoire de Paris Bulletin Astronomique, 1e serie. vol. 1. p. 15. - Henry Paul, Henry Prosper, 1884: Observations faites a l'Observatoire de Paris Bulletin Astronomique, 1e serie. vol. 1. p. 89. - Stone, Ormond, 1895: Observations of the satellites of Mars, Astronomical Journal, No.333, vol. 14, n.21, 164. - Sereda, E.M., 1981: Glav. Astron. Obs. Kiev., No. 3868. - Major, S.P. and Sereda, E.M., 1983: Glav. Astron. Obs. Kiev., No. 6759. - Kiseleva, T.P., Chanturiia, S.M.: 1988, Photographic positional observations of Phobos at Abastumani in 1986 (In Russian). Abastumanskaia Astrofizicheskaia Observatoriia, Biulleten' (ISSN 0375-6644), n. 63, p. 31-34 - Kiselev, A.A., Kiseleva, T.P., Bobylev, V.V., Dement'eva, A.A., Mikhailov,A.V. Shakht, N.A., Shor, V.A., 1989: Results of observations of Mars satellites at the lunar-planetary telescope of the Ordubad expedition of the Pulkovo Observatory of the USSR Academy of Sciences in 1986, Pulkovo, Glav. Astron. Observatoriia, Izvestiia (ISSN 367-7966), No.206, p. 33-38. - Bobylev, V.V., Evdokimov, A.E., Kalinichenko. O.A., Kiselev. A.A., Kiseleva, T.P., Kruendal, A.V., Potter, H.I., Puliaev, S.P., Sveshnikov, M.L., Tolbin, S.V., 1991: Positional photographic observations of the Mars satellites made at Pulkovo and Ordubad in 1988. Pulkovo, Glavnaia Astronomicheskaia Observatoriia, Izvestiia (ISSN 0367-7966). N. 207. P. 37-43. - Colas, F., 1992: Astrometric observations of Phobos and Deimos during the 1988 opposition of Mars, Astron. Astrophys. Suppl. Ser. 1,1-99. - Izhakevich, R.M., Kaltygina, S.V., Ledovskaya, I.V., Sereda, E.M., Shatokhina, S.V., 1990: Position photographic observations of Mars and its satellites in 1988 Manuscript deponent at the soviet science and technical information institute, Kiev, No. 3888-B90, p. 1-25. - Jones, D.P.H., Sinclair, A.T. and Williams, I.P., 1989, Secular acceleration of Phobos confirmed from position obtained on La Palma, Monthly Notices of the Royal Astronomical Society, vol.237, n.1, p.15-19. - Kalinichenko, O.A., Kiseleva, T.P., Salukvadze, G.N., Chanturiia, S.M., 1990: Photographic position observations at Abastumani of Mars'satellites during the Great Opposition of 1988 (In Russian) Abastumanskaia Astrofizicheskaia Observatoriia, Biulleten' (ISSN 0375-6644), No. 68, p. 99-110. Affiliation: AB(Glavnaia Astronomicheskaia Observatoriia, Pulkovo, USSR). - Kudryavtsev, S.M., Shokin, Yu.A., Yevstigneeva, N.M. 1992: The improved Martian satellites positional series derived from the observations during the 1988 opposition (in english), Preprint 24, Sternberg State Astronomical Institute, Moscow, p. 1-30 - Nikonov, O.V., Zhilinskii, E.G., Bobylev, V.V., Nikonova, E.S., 1991: Positional photographic observations of Phobos in Cuba in October 1988, Pulkovo, Glavnaia Astronomicheskaia Observatoriia, Izvestiia (ISSN 0367-7966), No. 207, p. 52-58. - Nikonov, O.V., Zhilinskii, E.G., Bobylev, V.V., Nikonova, E.S., 1990: Results of the positional photographic observations of Phobos made in Cuba in October 1988 (In Russian), Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 6, p. 21-23. Affiliation: AD(Glavnaia Astronomicheskaia Observatoriia, Pulkovo, USSR) - Tel'nyuk-Adamchuk, V.V., Churyumov, K.I., Pikalo, N.I., Pasecnik, S.V., Borisko, S.E., Kleschenok, V.V., 1990: Results of the position phootographic observations of Mars and its satellites in 1986-1988 Manuscript deponent at the Ukrainean information institute. Kiev. No. 1890-Uk90., p. 1-28. Format This is a sequential file and each observation is given as a record of 117 bytes with a following format, i5 the year of the observations, | 4i3 month, day, hours, minutes, > Date in UTC f5.1 seconds, | i4 code of the orign of coordinates, 0, relative to Mars 1, relative to Phobos 4f9.3 1st and 2nd observations for the satellites 1 and/or 2, or - (a9) if absent observation 1x 4f5.1 1st and 2nd sigma noises for the satellites 1 and/or 2, or - (a5) if absent sigma a5 plate scale, i4 code of the name of the observer, 3i4 number of the series of observations, number of the opposition, code of the observatory, a6 observation type, i2 reference system. 2) - The file tab_vatoir_mars.dat Contents - 34 names do the site of observations and the of them in the file obs_mars_nsdb.dat Format - This a sequential file of 34 records of 35 bytes in the following format, a26 the name of the site of the observations, a5 "coded", i4 the number of code of the site. 3) - The file tab_vator_mars.dat Contents - 68 names of observers and the code of them in the file obs_mars_nsdb.dat Format - This a sequential file of 68 record of 36 bytes in the following format, a27 the name of the observer, a5 "coded", i4 the number of code of the observer. ===============================================================================