Contents.
      planet: 8 - Neptune
  satellites: N1-Triton 
total number: 2299
        type: absolute
       dates: 2005-2009
 observatory: 337 - Sheshan, formerly Zo-Se

Reference.
    H.Y.Zhang , R.C.Qiao, Y.Yu, D.Yan, and K.Tang (2021)
    New positions of Triton based on Gaia DR2 and new image processing methods.
    The Astronomical Journal, 161:237 (8pp), 2021 May   
    DOI: https://doi.org/10.3847/1538-3881/abf121

Informations.
         relative to: absolute
     reference frame: astrometric
     centre of frame: topocentre
    epoch of equinox: J2000
          time scale: UTC
           reduction: Gaia DR2
         coordinates: absolute
    diff. refraction: no information
            receptor: CCD
           telescope:  Reflector, D=156 cm (at the Sheshan Station, code 337), 
           observers: Qiao R. C., Zhang H. Y. et al. (see the publication)
   
Format.
  1. Year of observation
  2. Month of observation
  3. Day of observation with decimals
  4. Hour   of right ascension (alpha, h)
  5. Minute of right ascension (alpha, m)
  6. Second of right ascension (alpha, s)
  7. Degree of declination (delta, deg)
  8. Minute of declination (delta, '  )
  9. Second of declination (delta, '' )
 10. Code of observatory.

----------------------------------------------------
Year  day           alpha            delta       Obs
   month  (UTC)     h  m  s       deg  ' ''     code  
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