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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1997HN9 ∴ Observational info
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(192413) 1997HN9  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9536.99 days
Unobserved 324 days

 

Astrometry summary
Optical
RMS of residuals 0.46
First observation 1997-04-30.211
Last observation 2023-06-10.198
Number (Discarded) 867 (4)

 

Get the observational details
ASCII file

 

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