Contents. asteroid: (174567)Varda satellites: Ilmare total number: 12 type: position dates: 2009-2013 observatory: 250 - Hubble Space Telescope 568 - Mauna Kea (W.M. Keck observatory, Gemini observatory, Hawaii, USA) W.M. Grundy, S.B. Porter, S.D. Benecchi, H.G. Roe, K.S. Noll, C.A. Trujillo, A. Thirouin, J.A. Stansberry, E. Barker, and H.F. Levison. The Mutual Orbit, Mass, and Density of the Large Transneptunian Binary System Varda and Ilmare. Icarus. 2015. V. 257. P. 130-138. 2015Icar..257..130G 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 (secondary relative to primary) diff. refraction: no information (see in publications) receptor: telescope: Ntel 1 - HST/WFPC2-PC Ntel 2 - Keck II/NIRC2 Ntel 3 - HST/WFC3-UVIS Ntel 4 - Gemini N./NIRI Comments. Format. 1. Year of the moment of observation 2. Month of the moment of observation 3. Day of the moment of observation 4. h - hour of the moment of observation with decimals 5. Ntel - number of telescope 6. r - the distance from the Sun to the target, au 7. R - the distance from the observer to the target, au 8. g - the phase angle - the solar phase angle, degrees 9. X - relative right ascension, arcsec 10. SigX - the error of X , arcsec 11. Y - relative declination, arcsec 12. SigY - the error of Y, arcsec 13. Nobs- code of observatory ----------------------------------------------------------------------------------------- Year Day h Ntel r R g X SigX Y SigY Nobs Month au au deg arcsec arcsec arcsec arcsec -----------------------------------------------------------------------------------------