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(114745) 2003HD21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9272.97 days
Unobserved 383 days

 

Astrometry summary
Optical
RMS of residuals 0.52
First observation 1997-11-21.198
Last observation 2023-04-12.164
Number (Discarded) 816 (4)

 

Get the observational details
ASCII file

 

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