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AstDyS ∴ Objects ∴ 2001OA21 ∴ Observational info
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(54855) 2001OA21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 11472.2 days
Unobserved 264 days

 

Astrometry summary
Optical
RMS of residuals 0.84
First observation 1992-03-09.160
Last observation 2023-08-06.337
Number (Discarded) 2335 (266)

 

Get the observational details
ASCII file

 

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