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J/A+AS/138/247      Uranian satellites 1995-1998             (Veiga+, 1999)
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CCD astrometric observations of Uranian satellites: 1995-1998
       Veiga C.H., Vieira Martins R.
      <Astron. Astrophys. Suppl. Ser. 138, 247 (1999)>
      =1999A&AS..138..247V      (SIMBAD/NED BibCode)
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ADC_Keywords: Solar system ; Planets ; Positional data
Keywords: planets and satellites - Uranian system - CCD astrometry

Abstract:
    Astrometric positions of the five largest Uranian satellites from 750
    CCD frames taken at the oppositions of 1995 through 1998 are
    presented. The images were obtained over 35 nights. Observed positions
    are compared with the calculated positions from GUST86. The standard
    deviations are better than 0.05" for the four largest satellites and
    0.08" for Miranda.

File Summary:
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  FileName   Lrecl Records  Explanations
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ReadMe          80       .  This file
table1.dat      84     750  List of observed positions of the Uranian satellites
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See also:
    J/A+AS/107/559 : Position of Uranian satellites (Veiga+, 1994)
    J/A+AS/113/557 : Uranian satellites (Veiga+, 1995)

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
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   1-  4  I4    ---     Year      Year of observation
   6-  7  I2    ---     Month     Month of observation
   9- 19  F11.8 d       UTCday    UTC day of observation
  21- 27  F7.3  arcsec  XposM     ? Miranda X position referred to Oberon (1)
  29- 35  F7.3  arcsec  YposM     ? Miranda Y position referred to Oberon (1)
  37- 43  F7.3  arcsec  XposA     ? Ariel X position referred to Oberon (1)
  45- 51  F7.3  arcsec  YposA     ? Ariel Y position referred to Oberon (1)
  53- 59  F7.3  arcsec  XposU     ? Umbriel X position referred to Oberon (1)
  61- 67  F7.3  arcsec  YposU     ? Umbriel Y position referred to Oberon (1)
  69- 75  F7.3  arcsec  XposT     Titania X position referred to Oberon (1)
  77- 83  F7.3  arcsec  YposT     Titania Y position referred to Oberon (1)
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Note (1): The reference system is defined by the mean equator and equinox J2000
          X={Delta}RAcosDE; Y={Delta}DE
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Acknowledgements: Carlos Henrique Veiga <cave@obsn.on.br>
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(End)                                         Patricia Bauer [CDS]   18-Jun-1999