Contents.
            asteroid: (148780)Altjira
          satellites: companion   
        total number: 8
                type: position
               dates: 2006-2010
         observatory: 250 - Hubble Space Telescope  
                      568 - Mauna Kea (W.M. Keck observatory, Hawaii, USA) 

Reference.
W.M. Grundy, K.S. Noll, F. Nimmoc, H.G. Roe, M.W. Buie, 
S.B. Porter, S.D. Benecchi, D.C. Stephens, H.F. Levison, 
J.A. Stansberry
Five new and three improved mutual orbits of transneptunian binaries.
Icarus. 2011. V. 213. P. 678–692.   
2011Icar..213..678G

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 - WFPC2
              Ntel 2 - Keck/NIRC2
              Ntel 3 - ACS

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. SigmaX - the error of X (1sigma uncertainties), arcsec
11. Y - relative declination, arcsec 
12. SigmaY - the error of Y (1sigma uncertainties), arcsec
13. Vprim - visual magnitude for primary body, -99.9 if value is not given
14. sigVp - estimated uncertainties of Vprim, 0.0 if value is not given
15. Vsec - visual magnitude for secondary body, -99.9 if value is not given
16. SigVs - estimated  uncertainties of Vsec, 0.0  if value is not given
17. Nobs - code of observatory

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Year   Day    h    Ntel  r       R        g       X       SigX       Y      SigY     Vprim    SigVp   Vsec    SigVs  Nobs                
   Month                 AU      AU     grad    arcsec   arcsec    arcsec  arcsec     magn             magn
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