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(309902) 2009EF21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9125.9 days
Unobserved 233 days

 

Astrometry summary
Optical
RMS of residuals 0.50
First observation 1998-09-19.396
Last observation 2023-09-14.296
Number (Discarded) 349 (1)

 

Get the observational details
ASCII file

 

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