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AstDyS ∴ Objects ∴ 1998RJ57 ∴ Observational info
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(42739) 1998RJ57  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 11769.1 days
Unobserved 272 days

 

Astrometry summary
Optical
RMS of residuals 0.50
First observation 1991-05-17.149
Last observation 2023-08-06.277
Number (Discarded) 1521 (4)

 

Get the observational details
ASCII file

 

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