J/A+A/596/A37 USNO Saturnian observations 1974-1998 (Robert+, 2016)
New astrometric measurement and reduction of USNO photographic observations of
the main Saturnian satellites: 1974-1998.
Robert V., Pascu D., Lainey V., Arlot J.-E., De Cuyper J.-P., Dehant V.,
Thuillot W.
<Astron. Astrophys. 596, A37 (2016)>
=2016A&A...596A..37R 2016A&A...596A..37R (SIMBAD/NED BibCode)
ADC_Keywords: Planets ; Positional data
Keywords: astrometry - ephemerides - planets and satellites: individual: Saturn
Abstract:
Accurate positional measurements of planets and satellites are used to
improve our knowledge of both their orbits and their dynamics and to
infer the accuracy of the planet and satellite ephemerides. In the
framework of the European FP7 ESPaCE program, we provide the positions
of Saturn and its major satellites taken with the U.S. Naval
Observatory 26-inch refractor from 1974 to 1998. 526 astrophotographic
plates were measured with the digitizer of the Royal Observatory of
Belgium and reduced through an optimal process that includes image,
instrumental, and spherical corrections using the UCAC4 catalog to
provide the most accurate equatorial (RA, DEC) positions.
Description:
Astrometric and measured data of Saturn, Mimas, Enceladus, Tethys,
Dione, Rhea, Titan, Hyperion and Iapetus, taken with the U.S. Naval
Observatory 26-inch refractor from 1974 to 1998.
Astrometric (RA,DEC) positions are geocentric observed positions
reduced from stars and refer to the ICRF. They were corrected for all
instrumental and spherical effects, except for the light time
propagation. Raw data with (x,y) positions of the stars and satellites
are available on demand (Vincent Robert, vincent.robert(at)obspm.fr).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 42 1055 Astrometric data of Saturn (1974-1998)
table2.dat 42 123 Astrometric data of Mimas (1974-1998)
table3.dat 42 285 Astrometric data of Enceladus (1974-1998)
table4.dat 42 389 Astrometric data of Tethys (1974-1998)
table5.dat 42 524 Astrometric data of Dione (1974-1998)
table6.dat 42 849 Astrometric data of Rhea (1974-1998)
table7.dat 42 968 Astrometric data of Titan (1974-1998)
table8.dat 42 29 Astrometric data of Hyperion (1974-1998)
table9.dat 42 779 Astrometric data of Iapetus (1974-1998)
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See also:
J/A+AS/139/47 : 1995 Saturnian satellites mutual events (Emelianov+, 1999)
J/A+A/380/727 : 1995 Saturnian satellite observations (Vienne+, 2001)
J/A+A/383/296 : Saturnian Satellites positions (1996-2000) (Peng+, 2002)
J/A+A/400/1095 : Saturnian satellite CCD observation 1995-1999 (Veiga+, 2003)
J/A+A/544/A29 : 2009 Saturnian satellites mutual events (Arlot+, 2012)
J/A+A/551/A129 : Mimas and Enceladus Cassini ISS astrometry (Tajeddine+ 2013)
J/A+A/572/A43 : Saturnian satellites Cassini ISS astrometry (Cooper+, 2014)
J/A+A/575/A73 : Saturnian satellites astrometry 2004-12 (Tajeddine+, 2015)
J/AJ/149/27 : Cassini ISS astrometry of Saturnian satellites (Cooper+, 2015)
J/other/SoSyR/45.523 : Saturnian satellites CCD observations (Grosheva+, 2011)
Byte-by-byte Description of file: table?.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d JD Julian day of observation (TDB)
17- 28 F12.6 deg RAdeg Right ascension (ICRF)
31- 42 F12.6 deg DEdeg Declination (ICRF)
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Acknowledgements:
The research leading to these results has received funding from the
European Community's Seventh Framework Program (FP7/2007-2013) under
grant agreement 263466 for the FP7-ESPaCE program, the International
Space Science Institute ISSI, and the CNRS/INSU/CNES Programme
National de Planetologie PNP and Gravitation, References,
Astronomie, Metrologie GRAM programs. The authors are indebted to all
participants of the Encelade WG.
Author's address:
Vincent Robert, vincent.robert(at)obspm.fr
(End) Vincent Robert [IPSA & IMCCE], Patricia Vannier [CDS] 13-Oct-2016