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(6491) 1991OA  ▹ 
OBSERVATIONAL INFORMATION
Arc information
Arc length 10431 days
Unobserved 552 days

 

Astrometry summary
Optical
RMS of residuals 0.594664"
First observation 1991-03-18.58486
Last observation 2019-10-08.31792
Number (Discarded) 192 (2)

 

Get the observational details
Optical observations (ASCII file)

 

Note. The ASCII file is in a format suitable for OrbFit input.