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(21558) Alisonliu  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 11521.6 days
Unobserved 268 days

 

Astrometry summary
Optical
RMS of residuals 0.50
First observation 1992-02-06.209
Last observation 2023-08-23.773
Number (Discarded) 3666 (38)

 

Get the observational details
ASCII file

 

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