J/A+A/551/A129 Mimas and Enceladus Cassini ISS astrometry (Tajeddine+ 2013)
Astrometric reduction of Cassini ISS images of the Saturnian satellites Mimas
and Enceladus.
Tajeddine R., Cooper N.J., Lainey V., Charnoz S., Murray C.D.
<Astron. Astrophys. 551, A129 (2013)>
=2013A&A...551A.129T 2013A&A...551A.129T
ADC_Keywords: Solar system ; Planets ; Positional data
Keywords: astrometry - planets and satellites: individual: Mimas -
planets and satellites: individual: Enceladus -
methods: observational
Abstract:
We provide the Cassini ISS astrometric observations of the Saturnian
satellites Mimas and Enceladus. The observations were taken over 6
years. Observation residuals were compared to JPL ephemerides SAT317
and SAT351, showing that the observation error is between 3 and 4
kilometers.
Description:
Astrometric observations of Cassini's Imaging Science Subsystem (ISS)
Narrow Angle Camera (NAC) of Mimas and Enceladus. Camera's field of
view is about 0.35 degrees, Image size 1024x1024. Image resolution is
1.2354-arcsec/pixel. 870 and 920 observations of Mimas and Enceladus,
respectively, are provided. Positions in right ascension and
declination, camera's pointing vector orientation, and image positions
(in pixels) are given in the table. The method for astrometric
reduction and satellite center of figure measurement are well
described in paper. Satellites astrometric positions are given in ICRF
reference frame and centered on Cassini spacecraft.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 145 1790 Astrometric observation of Cassini's Imaging Science
Subsystem Narrow Angle Camera (ISS-NAC) images of
Mimas and Enceladus
--------------------------------------------------------------------------------
See also:
J/A+A/380/727 : 1995 Saturnian satellite observations (Vienne+, 2001)
J/A+A/400/1095 : Saturnian satellites 1995-1999 CCD observation (Veiga+, 200
J/A+A/383/296 : Saturnian Satellites positions (1996-2000) (Peng+, 2002)
J/A+A/544/A29 : 2009 Saturnian satellites mutual events (Arlot+, 2012)
J/A+AS/139/47 : 1995 Saturnian satellites mutual events (Emelianov+, 1999)
J/other/SoSyR/45.523 : Saturnian satellites CCD observations (Grosheva+, 2011)
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 A13 --- Image Identification of the reduced image
15- 25 A11 "YYYY/MMM/DD" Obs.date Date of the observation
27- 38 A12 "h:m:s" Obs.time Observation time
41- 49 A9 --- Body Name of the observed body (ENCELADUS or
MIMAS)
51- 60 F10.6 deg RAdeg Body's right ascension (ICRF)
62- 71 F10.6 deg DEdeg Body's declination (ICRF)
73- 81 E9.3 deg e_RAdeg Uncertainty on right ascension
83- 91 E9.3 deg e_DEdeg Uncertainty on right ascension
93-102 F10.6 deg RAcdeg Camera's right ascension
104-113 F10.6 deg DEcdeg Camera's declination
116-125 F10.6 deg Twist Camera's Twist angle
127-133 F7.2 pix Sample Body's sample position
135-141 F7.2 pix Line Body's line position
144-145 I2 --- Nst Number of detected stars
--------------------------------------------------------------------------------
Acknowledgements:
Radwan Tajeddine, tajeddine(at)imcce.fr
(End) Radwan Tajeddine [IMCCE, France], Patricia Vannier [CDS] 07-Feb-2013