Contents. planet: 9 - Pluto satellites: S/2011 (134340) 1 total number: 7 type: relative dates: 2006-2011 observatory: HST Reference. CBET 2769. 2011 July 20. Informations. relative to: planet reference frame: astrometric centre of frame: topocentre epoch of equinox: J2000 time scale: UTC reduction: no information coordinates: Apparent distance, position angle diff. refraction: no information receptor: CCD telescope: HST observers: see reference data included in standard data file: no Comments. no information Format. 1. Year of the date of observation 2. Month of the date of observation 3. Day of the date of observation with decimals (UTC) 4. Apparent distance, arcsec 5. Position angle, degrees 6. Observed magnitude in V band ------------------------------------- year App. pos. Magn. month dist. angle in day arcsec deg. V -------------------------------------