Content 
                     asteroid: 1999 XY143
                   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.
1999 XY_143, 1999 RY_214, and 2002 VT_130.
IAU Circ., No. 9075, #2 (2009).
2009IAUC.9075....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: Delta(RA), Delta(Dec) 
             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. Delta(RA) - relative right ascension, arcsec
 5. SigX - the error of Delta(RA) , arcsec
 6. Delta(Dec) - relative declination, arcsec 
 7. SigY - the error of Delta(Dec), arcsec
                          
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Year       Day     Delta(RA) Sig X    Delta(Dec) Sig Y    
     Month          arcsec   arcsec    arcsec   arcsec  
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