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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2004YL21 ∴ Observational info
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(167768) 2004YL21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9289.02 days
Unobserved 323 days

 

Astrometry summary
Optical
RMS of residuals 0.47
First observation 1998-01-01.309
Last observation 2023-06-08.326
Number (Discarded) 465 (1)

 

Get the observational details
ASCII file

 

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