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AstDyS ∴ Objects ∴ 1981EF9 ∴ Observational info
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(18306) 1981EF9  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 15966.4 days
Unobserved 318 days

 

Astrometry summary
Optical
RMS of residuals 0.46
First observation 1979-10-18.367
Last observation 2023-07-05.744
Number (Discarded) 2050 (13)

 

Get the observational details
ASCII file

 

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