AstDyS-2
Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2001QR221 ∴ Observational info
Contact »
(109479) 2001QR221  ▹ 
OBSERVATIONAL INFORMATION
◲
Arc information
Arc length 12579.9 days
Unobserved 39 days

 

Astrometry summary
Optical
RMS of residuals 0.42
First observation 1989-10-07.262
Last observation 2024-03-17.198
Number (Discarded) 1229 (4)

 

Get the observational details
ASCII file

 

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