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(229951) 1998XU21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9094.8 days
Unobserved 198 days

 

Astrometry summary
Optical
RMS of residuals 0.51
First observation 1998-11-19.465
Last observation 2023-10-14.263
Number (Discarded) 542 (3)

 

Get the observational details
ASCII file

 

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