ADC/CDS Standard Document for Catalog:
/journal_tables/A+AS/121/65/

1. Use the ADC Data Viewer Suite to visualize the data.
2. Get the data files via anonymous FTP. (See Note.)

J/A+AS/121/65       1990-1994 Saturn's satellites astrometry      (Harper+ 1997)
================================================================================
CCD astrometry of Saturn's satellites 1990-1994
      Harper D., Murray C.D., Beurle K., Williams I.P., Jones D.H.P.,
      Taylor D.B., Greaves S.C.
     <Astron. Astrophys. Suppl. Ser. 121, 65 (1997)>
     =1997A&AS..121...65H      (SIMBAD/NED BibCode)
================================================================================
ADC_Keywords: Planets ; Positional data
Keywords: satellites of Saturn - astrometry

Description:
    In this paper, we publish 1206 measurements of positions of the major
    satellites of Saturn made in 1990, 1991, 1993 and 1994 using CCD
    detectors attached to the 1-metre Jacobus Kapteyn Telescope on the
    island of La Palma. Analysis of the data as inter-satellite positions
    shows that the observations of Tethys, Dione, Rhea and Titan have
    root-mean-square residuals of 0.08 arcseconds, corresponding to 500km
    at the distance of Saturn.

File Summary:
--------------------------------------------------------------------------------
  FileName      Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
table6            160      152   Observations made in 1990
table7            160       58   Observations made in 1991
table8            160       35   Observations made in 1993
table9            160       33   Observations made in 1994
--------------------------------------------------------------------------------

See also:
    J/A+AS/136/257 : Saturn's satellites in 1995/97  (Harper+ 1999)
    J/A+AS/120/107 : 1989-1994 CCD observations of Triton (Veiga+ 1996)
    J/A+AS/131/291 : 1995-1997 CCD positions of Triton (Veiga+ 1998)
    J/A+AS/136/445 : CCD observations of Nereid (Veiga 1999)
    J/A+AS/139/305 : Position of Saturn's satellites (1982-1988) (Veiga+, 1999)
    J/A+AS/139/47  : 1995 Saturnian satellites mutual events  (Emelianov+, 1999)
    J/A+AS/143/405 : Astrometric observations of Helene (Veiga+, 2000)

Byte-by-byte Description of file: table6 table7 table8 table9
--------------------------------------------------------------------------------
   Bytes Format Units  Label     Explanations
--------------------------------------------------------------------------------
   1-  4  I4    yr     OBS.Y     Year of the observation (1)
   6-  7  I2  "month"  OBS.M     Month of the observation (1)
   9- 17  F9.6  d      OBS.D     Day of the observation (1)
  19- 23  F5.1  s      Exp       Length of the exposure; add half of this value
                                  to the start date to obtain the mid-exposure
                                  time
  25- 32 8I1    ---    Boo       [0/1] Boolean flags indicating presence (1)
                                   or absence (0) of each satellite in the image
  33- 40  F8.2  pix    xiMimas   ? Column coordinate xi of Mimas, if present
  41- 48  F8.2  pix    etaMimas  ? Row coordinate eta of Mimas, if present
  49- 56  F8.2  pix    xiEnc     ? Column coordinate xi of Enceladus, if present
  57- 64  F8.2  pix    etaEnc    ? Row coordinate eta of Enceladus, if present
  65- 72  F8.2  pix    xiTethys  ? Column coordinate xi of Tethys, if present
  73- 80  F8.2  pix    etaTethys ? Row coordinate eta of Tethys, if present
  81- 88  F8.2  pix    xiDione   ? Column coordinate xi of Dione, if present
  89- 96  F8.2  pix    etaDione  ? Row coordinate eta of Dione, if present
  97-104  F8.2  pix    xiRhea    ? Column coordinate xi of Rhea, if present
 105-112  F8.2  pix    etaRhea   ? Row coordinate eta of Rhea, if present
 113-120  F8.2  pix    xiTitan   ? Column coordinate xi of Titan, if present
 121-128  F8.2  pix    etaTitan  ? Row coordinate eta of Titan, if present
 129-136  F8.2  pix    xiHyp     ? Column coordinate xi of Hyperion, if present
 137-144  F8.2  pix    etaHyp    ? Row coordinate eta of Hyperion, if present
 145-152  F8.2  pix    xiIap     ? Column coordinate xi of Iapetus, if present
 153-160  F8.2  pix    etaIap    ? Row coordinate eta of Iapetus, if present
--------------------------------------------------------------------------------
Note (1): The year, month and day give U.T.C. time of the start of the exposure
--------------------------------------------------------------------------------

Acknowledgements: David Harper <D.Harper@qmw.ac.uk>
================================================================================
(End)                                         Patricia Bauer [CDS]   29-Jul-1996