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J/other/KFNT/15.483      Positions of Thebe and Amalthea      (Ledovskaya+ 1999)
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Astrometric CCD observations of Jupiter's inner satellites Thebe and
Amalthea and Saturn's satellite Phoebe in 1998 opposition.
    Ledovskaya I.V., Jockers K., Karpov N.V., Sergeev A.V.
   <Kinematika Fiz. Nebesn. Tel., 15, 483 (1999)>
   =1999KFNT...15..483L
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ADC_Keywords: Planets ; Positional data
Keywords: planets and satellites - satellites of Jupiter - astrometry

Description:
    The file jovsat.dat contains 35 intersatellite positions of inner
    Jovian moons Thebe and Amalthea, derived from the observations made
    with the 2-m Zeiss RCC telescope of Terskol Observatory (Terskol peak,
    Northern Caucasus, long=42.50083{deg}, lat= 43.27427{deg}, h=3100m) in
    1998. The Two-Channel Focal Reducer of the Max-Planck Institute for
    Aeronomy (MPAe,Germany) was used for acquisition of the images. We
    provide delta(alpha) and delta(delta) of Thebe and Amalthea with
    respect to the Galilean satellites, that were used as the reference
    points forming the reference direction on the frames. Astrometric
    topocentric coordinates J2000.0 of the Galilean satellites were used
    for scale and orientation angle determination. The array scale was
    corrected for differential refraction and differential aberration to
    first-order. All observed positions are compared with the theoretical
    ones.

File Summary:
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 FileName  Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe        80        .   This file
jovsat.dat    43       35   Observed astrometric positions of inner Jovian
                             satellites
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See also:
  J/A+A/311/710  : Faint Jovian satellites ephemerides (Rocher+, 1996)
  J/A+A/314/312  : Galilean satellites mutual events in 1997 (Arlot 1996)
  J/A+AS/121/65  : 1990-1994 Saturn's satellites astrometry (Harper+ 1997)
  J/A+AS/136/257 : Saturn's satellites in 1995/97 (Harper+ 1999)
  J/A+AS/139/305 : Position of Saturn's satellites (1982-1988) (Veiga+, 1999)

Byte-by-byte Description of file: jovsat.dat
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   Bytes Format   Units        Label     Explanations
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   1-  4  I4      yr           OBS.Y     Date of observation in UT (year)
   6-  7  I2      ---          OBS.M     Date of observation in UT (year)
   9- 10  I2      d            OBS.D     Date of observation in UT (year)
  11- 13  I3      h            OBS.h     Time of observations in UT (hour)
  14- 16  I3      min          OBS.m     Time of observations in UT (min)
  17- 19  I3      s            OBS.s     Time of observations in UT (sec)
  20- 27  F8.2    arcsec       Xpos      X=15*delta(alpha)*cos(delta)
  28- 35  F8.2    arcsec       Ypos      Y=delta(delta)
  36- 39  I4      ---          Ns        Number of satellite (1)
  40- 43  I4      ---          Nrs       Number of reference satellite (1)
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Note (1): Satellite numbers:
     505: Amalthea
     514: Thebe
     501: Io
     502: Europa
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Acknowledgements: Kulyk Irina <leda@mao.kiev.ua>
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(End)                                        Patricia Bauer [CDS]    03-Dec-2001