Contents. asteroid: (50000)Quaoar satellites: Weywot total number: 4 type: position dates: 2011-2011 observatory: 250 - Hubble Space Telescope Reference. W. C. Fraser, K. Batygin, M. E. Brown, A. Bouchez. The mass, orbit, and tidal evolution of the Quaoar–Weywot system Icarus. 2013. V. 222. P. 357–363. 2013Icar..222..357F Informations. relative to: the primary reference frame: astrometric ICRF centre of frame: topocentric epoch of equinox: J2000 time scale: UTC reduction: no information coordinates: X and Y are the differences in position between the primary and the satellite diff. refraction: no information (see in publications) receptor: telescope: HST Comments. JD of the moment of observation is JD=Day + 2453000, the moment Day= 2719.82856 is 07.06.2011 Format 1. Day of the moment of observation, JD=2453000+Day 2. X - relative right ascension, arcsec 3. SigX - coordinate errors DRA, arcsec 4. Y - relative declination, arcsec 5. SigY - coordinate errors DRA, arcsec -------------------------------------------- Day X SigX Y SigY arcsec arcsec arcsec arcsec ---------------------------------------------