AstDyS-2
Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2001QR171 ∴ Observational info
Contact »
(139647) 2001QR171  ▹ 
OBSERVATIONAL INFORMATION
◲
Arc information
Arc length 8596.03 days
Unobserved 190 days

 

Astrometry summary
Optical
RMS of residuals 0.53
First observation 2000-04-05.198
Last observation 2023-10-18.226
Number (Discarded) 455 (4)

 

Get the observational details
ASCII file

 

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