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Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 2007XL20 ∴ Observational info
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(447904) 2007XL20  ▹ 
OBSERVATIONAL INFORMATION
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Arc information
Arc length 7180.99 days
Unobserved 397 days

 

Astrometry summary
Optical
RMS of residuals 0.59
First observation 2003-12-21.404
Last observation 2023-08-19.394
Number (Discarded) 144 (2)

 

Get the observational details
ASCII file

 

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