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AstDyS ∴ Objects ∴ 1999XB12 ∴ Observational info
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(21983) 1999XB12  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 13876.8 days
Unobserved 256 days

 

Astrometry summary
Optical
RMS of residuals 0.55
First observation 1985-08-16.305
Last observation 2023-08-14.068
Number (Discarded) 2787 (287)

 

Get the observational details
ASCII file

 

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