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Дата изменения: Tue Jun 22 18:51:00 2004 Дата индексирования: Mon Oct 1 23:32:47 2012 Кодировка: Поисковые слова: m 87 jet |
Contents. planet: 5 - Jupiter satellites: J6 - Himalia : 23, J7 - Elara : 9, J8 - Pasiphae : 13, J9 - Sinope : 8, J10 - Lysithea : 7, J11 - Carme : 10, J12 - Ananke : 7, J13 - Leda : 7 total number: 84 type: absolute dates: 1990-1992 observatory: 711 - McDonald Observatory, Fort Davis Reference. Whipple A. L., Shelus P. J., and Benedict G. F. (1993) Astrometric observations of the faint outer satellites of Jupiter during the 1990-1991 and 1991-1992 oppositions Astronomical Journal. V. 105. N. 1. P. 347-349. 1993AJ____105__347W Informations. relative to: absolute reference frame: astrometric centre of frame: topocentre epoch of equinox: J2000 time scale: UTC reduction: Conversion to FK5/J2000.0 coordinates: absolute diff. refraction: no information receptor: photographic telescope: Otto Struve reflector, D = 2.1 m. observers: Hemenway P.D., Shelus P. J., Whipple A.L. data included in standard data file: no Comments. 1. The FK4/B1950.0 positions of the ACRS reference stars were used. To obtain the positions given in the table, the FK4/B1950.0 positions of the satellites were processed to the J2000.0 frame by the transformations given in the IAU Commisson 20 Conversion to FK5/J2000.0. 2. Uncertainties are formal standard deviations from the solution in the two coordinates, computed as the quadratic sum of the formal standard deviations for the plate solutions (one for the CCD data and two for the plates). Format. 1. Number of satellite (N sat): 6 - J6, 7 - J7, 8 - J8, 9 - J9, 10 - J10, 11 - J11, 12 - J12, 13 - J13. 2. Julian date (UTC) of observation with decimals 3. Hour of right ascension (alpha, h) 4. Minute of right ascension (alpha, m) 5. Second of right ascension (alpha, s) 6. Degree of declination (delta, deg) 7. Minute of declination (delta, ' ) 8. Second of declination (delta, '' ) 9. Unsertainty in alpha, arcsec 10. Unsertainty in delta, arcsec ----------------------------------------------------------- alpha delta Unsertainties N JD (UTC) alpha delta sat with decimals h m s deg ' '' arcsec arcsec -----------------------------------------------------------