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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2000OS21 ∴ Observational info
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(122245) 2000OS21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 8855.98 days
Unobserved 371 days

 

Astrometry summary
Optical
RMS of residuals 0.58
First observation 1999-02-12.197
Last observation 2023-05-13.176
Number (Discarded) 1404 (135)

 

Get the observational details
ASCII file

 

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