AstDyS-2
Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2001DD20 ∴ Observational info
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(257982) 2001DD20  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 8145.56 days
Unobserved 338 days

 

Astrometry summary
Optical
RMS of residuals 0.49
First observation 2001-02-02.382
Last observation 2023-05-23.940
Number (Discarded) 670 (2)

 

Get the observational details
ASCII file

 

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