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AstDyS ∴ Objects ∴ 2001HL21 ∴ Observational info
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(77466) 2001HL21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9067.88 days
Unobserved 196 days

 

Astrometry summary
Optical
RMS of residuals 0.77
First observation 1998-12-17.189
Last observation 2023-10-15.069
Number (Discarded) 2173 (501)

 

Get the observational details
ASCII file

 

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