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AstDyS ∴ Objects ∴ 2001HR21 ∴ Observational info
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(135001) 2001HR21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 10680 days
Unobserved 400 days

 

Astrometry summary
Optical
RMS of residuals 0.56
First observation 1994-01-16.244
Last observation 2023-04-14.203
Number (Discarded) 496 (6)

 

Get the observational details
ASCII file

 

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