AstDyS-2
Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2001YY4 ∴ Observational info
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(228572) 2001YY4  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 8770.92 days
Unobserved 577 days

 

Astrometry summary
Optical
RMS of residuals 0.57
First observation 1998-09-27.305
Last observation 2022-10-02.222
Number (Discarded) 519 (3)

 

Get the observational details
ASCII file

 

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