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AstDyS ∴ Objects ∴ 2001QN74 ∴ Observational info
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(57221) 2001QN74  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 12051.1 days
Unobserved 39 days

 

Astrometry summary
Optical
RMS of residuals 0.58
First observation 1991-03-20.318
Last observation 2024-03-17.451
Number (Discarded) 1206 (9)

 

Get the observational details
ASCII file

 

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