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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2004YZ21 ∴ Observational info
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(277011) 2004YZ21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 6813.09 days
Unobserved 703 days

 

Astrometry summary
Optical
RMS of residuals 0.56
First observation 2003-09-30.263
Last observation 2022-05-26.354
Number (Discarded) 299 (2)

 

Get the observational details
ASCII file

 

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