AstDyS-2
Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2000DN21 ∴ Observational info
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(138041) 2000DN21  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 9061.81 days
Unobserved 468 days

 

Astrometry summary
Optical
RMS of residuals 0.49
First observation 1998-08-17.359
Last observation 2023-06-09.171
Number (Discarded) 1209 (4)

 

Get the observational details
ASCII file

 

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