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AstDyS ∴ Objects ∴ 1999LZ21 ∴ Observational info
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(20458) 1999LZ21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 22859.6 days
Unobserved 343 days

 

Astrometry summary
Optical
RMS of residuals 0.49
First observation 1960-10-17.271
Last observation 2023-05-19.826
Number (Discarded) 1760 (28)

 

Get the observational details
ASCII file

 

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