Content asteroid: 2003 YU179 satellites: companion total number: 1 type: position dates: 2008-2008 observatory: 250 - Hubble Space Telescope Reference. Noll K. S., Grundy W. M., Benecchi S. D., Levison, H. A. 2000 WT_169 and 2003 YU_179. IAU Circ., No. 9076, #2 (2009). 2009IAUC.9076....2N 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, Y (R.A., Decl. in the communication) diff. refraction: no information receptor: telescope: Wide Field Planetary Camera 2 Comments. R.A., Decl. in the communication Format. 1. Year of the moment of observation 2. Month of the moment of observation 3. Day of the moment of observation 4. X - relative right ascension, arcsec 5. SigX - the error of X , arcsec 6. Y - relative declination, arcsec 7. SigY - the error of Y, arcsec ------------------------------------------------------ Year Day X Sig X Y Sig Y Month arcsec arcsec arcsec arcsec ------------------------------------------------------