Access to Astronomical Catalogues

← Click to display the menu
J/A+A/610/A2       Saturnian satellites Cassini ISS astrometry   (Cooper+, 2018)

The Caviar software package for the astrometric reduction of Cassini ISS images: description and examples. Cooper N.J., Lainey, V., Meunier, L-E., Murray C.D., Zhang, Q-F, Baillie, K., Evans M.W., Thuillot, W., Vienne, A. <Astron. Astrophys. 610, A2 (2018)> =2018A&A...610A...2C (SIMBAD/NED BibCode)
ADC_Keywords: Solar system ; Planets ; Positional data Keywords: astrometry - methods: data analysis - techniques: image processing - planets and satellites: general Abstract: Caviar is a software package designed for the astrometric measurement of natural satellite positions in images taken using the Imaging Science Subsystem (ISS) of the Cassini spacecraft. We provide new astrometric positions for selected major satellites of Saturn, 2013-2016. Description: Table1.dat contains astrometric observations of the Saturnian satellites Mimas, Enceladus, Tethys, Dione, Rhea, Iapetus, Hyperion, Pandora, Janus and Helene,from Cassini ISS NAC images. The camera's field of view is ∼0.35-degree with a resolution of ∼1.2354-arcsec/pixel. Image size is 1024x1024 pixel. Positions are provided in both right ascension and declination, and as image pixel locations. The orientation of the camera's pointing vector is also provided. Positions are given in the International Celestial Reference Frame (ICRF), centered on the Cassini spacecraft. Measured reference star positions used to estimate the camera pointing correction are provided separately in table5.dat. The origin of the line, sample coordinate system is at the top left of the image with line, y, increasing downward and sample, x, to the right. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 131 287 Astrometric observations of Saturnian satellites Mimas, Enceladus, Tethys, Dione and Rhea from Cassini ISS NAC images table5.dat 140 1485 Observed reference star positions from Cassini ISS NAC images
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 : 1995-99 CCD observation of Saturnian satellite (Veiga+, 2003) J/other/SoSyR/45.523 : Saturnian satellites CCD observations (Grosheva+, 2011) 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 : Astrometry of Saturnian satellites 2004-12 (Tajeddine+, 2015) J/A+A/596/A37 : USNO Saturnian observations 1974-1998 (Robert+, 2016) J/AJ/149/27 : Cassini ISS astrometry of Saturnian satellites (Cooper+, 2015) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 11 A11 --- Image Image identification number 14- 24 A11 "YYYY/MMM/DD" Date of the observation 26- 37 A12 "h:m:s" Obs.time Observation time (image mid-time) 40- 49 F10.6 deg RAcdeg Camera's right ascension 52- 61 F10.6 deg DEcdeg Camera's declination 64- 73 F10.6 deg Twist Camera's Twist angle 76- 83 F8.2 pix Line Body's line position 86- 93 F8.2 pix Sample Body's sample position 96-105 F10.6 deg RAdeg Body's right ascension (ICRF) 108-117 F10.6 deg DEdeg Body's declination (ICRF) 120-131 A12 --- Body Name of the observed body
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Image Image identification number 13- 38 A26 --- Star Catalogue name of star (UCAC5) 39- 55 F17.12 deg RAdeg Star's right ascension (ICRF) 56- 72 F17.12 deg DEdeg Star's declination (ICRF) 73- 82 F10.4 pix Oline Star's observed line coordinate 83- 92 F10.4 pix Osamp Star's observed sample coordinate 93-102 F10.4 pix Pline Star's predicted line coordinate 103-112 F10.4 pix Psamp Star's predicted sample coordinate 113-122 F10.4 pix resline O-C line residual 123-132 F10.4 pix ressamp O-C sample residual 133-140 F8.3 --- mag Catalogue magnitude (UCAC5)
Acknowledgements: Nicholas Cooper, n.cooper(at)
(End) Nicholas Cooper [QMUL], Patricia Vannier [CDS] 06-Nov-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© Université de Strasbourg/CNRS

    • Contact