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AstDyS ∴ Objects ∴ 1999XL255 ∴ Observational info
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(49972) 1999XL255  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9233 days
Unobserved 119 days

 

Astrometry summary
Optical
RMS of residuals 0.50
First observation 1998-09-18.224
Last observation 2023-12-29.228
Number (Discarded) 1201 (0)

 

Get the observational details
ASCII file

 

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