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AstDyS ∴ Objects ∴ 2001YU21 ∴ Observational info
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(125979) 2001YU21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 8055.86 days
Unobserved 172 days

 

Astrometry summary
Optical
RMS of residuals 0.48
First observation 2001-10-21.429
Last observation 2023-11-11.286
Number (Discarded) 699 (5)

 

Get the observational details
ASCII file

 

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