planet: Neptune  
  satellites: N1 - Triton: 27
total number: 27
        type: relative
       dates: 1886-1887
 observatory: 20 - Nice 

    Perrotin H.J. (1887)
    Memoires et observations. Observations des satellites Hyperion,
    Ariel, Umbriel et du Satellite de Neptune, faites a l'observatoire  
    de Nice 
    Bulletin Astronomique, Serie I, vol. 4, pp.339-341 

         relative to: planet
     reference frame: apparent
     centre of frame: topocentre
    epoch of equinox: date
          time scale: Nice
           reduction: no information
         coordinates: position angle and separation
    diff. refraction: no information
            receptor: micrometric
           telescope: l'equatorial de 0m,76
           observers: Perrotin H.J.
 data included in standard data file: no

          no information
  1. Year    of the moment of observation
  2. Month   of the moment of observation
  3. Day     of the moment of observation
  4. Hour    of the observation
  5. Minute  of the observation 
  6. Seconds of the observation with decimals
  7. Degrees of P (position angle) in degrees (999 if not given)
  8. S (separation) in arcsec (-99.99 if not given)
 Year          P.S.T      P        
    month                 deg.       S     
        day    h  m  s           arcsec