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AstDyS ∴ Objects ∴ 1998OA9 ∴ Observational info
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(55971) 1998OA9  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9739.12 days
Unobserved 145 days

 

Astrometry summary
Optical
RMS of residuals 0.44
First observation 1997-04-07.136
Last observation 2023-12-06.258
Number (Discarded) 1443 (5)

 

Get the observational details
ASCII file

 

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