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(9000) Hal  ▹ 
OBSERVATIONAL INFORMATION
Arc information
Arc length 15687.5 days
Unobserved 28 days

 

Astrometry summary
Optical
RMS of residuals 0.51"
First observation 1975-11-02.909
Last observation 2018-10-15.367
Number (Discarded) 1989 (12)

 

Get the observational details
ASCII file

 

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





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