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AstDyS ∴ Objects ∴ 1998EC9 ∴ Observational info
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(21383) 1998EC9  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 11717.5 days
Unobserved 187 days

 

Astrometry summary
Optical
RMS of residuals 0.49
First observation 1991-10-02.274
Last observation 2023-10-31.814
Number (Discarded) 1669 (6)

 

Get the observational details
ASCII file

 

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