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(101) Helena  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 55931.3 days
Unobserved 45 days

 

Astrometry summary
Optical
RMS of residuals 0.91
First observation 1871-03-22.990
Last observation 2024-05-10.274
Number (Discarded) 7083 (110)

 

Get the observational details
ASCII file

 

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