Content 
            asteroid: 2003 QY90                                                        
          satellites: companion                                                
        total number: 15                                                       
                type: position                                                 
               dates: 2003-2005                                                
         observatory: 304 - Las Campanas Observatory, Chile
                           
Reference.
S.D. Kern, J.L. Elliot. 
Discovery and characteristics of the Kuiper belt binary 2003QY90.
Icarus. 2006. V. 183. P. 179–185.   
2006Icar..183..179K

Informations.
         relative to: the primary                                     
     reference frame: astrometric ICRF
     centre of frame: topocentric
    epoch of equinox: J2000
          time scale: UTC
           reduction: no information
         coordinates: Delta(RA), Delta(Decl) secondary relative to the primary
    diff. refraction: no information 
            receptor: 
           telescope: Magellan telescopes, the Clay 6.5-m telescope at Las Campanas Observatory
                
Comments.

Format
1.  Year of the moment of observation  
2.  Month of the moment of observation 
3.  Day of the moment of observation 
4.  JD- time of the observations in JD with decimals
5.  Delta(RA) - relative right ascension, arcsec
6.  SigX - the error of Delta(RA), arcsec
7.  Delta(Decl) - relative declination, arcsec 
8.  SigY - the error of Delta(Decl), arcsec
9.  dm - the delta magnitude of the components
10. Sig dm - magnitude errors dm

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Year   Day          JD     Delta(RA) SigX Delta(Decl)SigY  dm sigdm  
  Month                     arcsec  arcsec arcsec   arcsec                          
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