NEODyS-2
Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 2001HH31 ∴ Observational info
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(159533) 2001HH31  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9686 days
Unobserved 74 days

 

Astrometry summary
Optical
RMS of residuals 0.529736
First observation 1997-11-06.32986
Last observation 2024-05-14.175605
Number (Discarded) 727 (3)

 

Get the observational details
Optical observations (ASCII file)

 

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