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
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Year Day h Ntel r R g X SigX Y SigY Nobs
Month au au deg arcsec arcsec arcsec arcsec
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