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AstDyS ∴ Objects ∴ 2001HZ21 ∴ Observational info
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(77468) 2001HZ21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 11247.5 days
Unobserved 261 days

 

Astrometry summary
Optical
RMS of residuals 0.55
First observation 1992-10-25.326
Last observation 2023-08-11.841
Number (Discarded) 883 (16)

 

Get the observational details
ASCII file

 

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