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(28137) Helenyao  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 11152.3 days
Unobserved 265 days

 

Astrometry summary
Optical
RMS of residuals 0.50
First observation 1993-01-22.500
Last observation 2023-08-05.825
Number (Discarded) 1992 (9)

 

Get the observational details
ASCII file

 

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