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(138971) 2001CB21  ▹ 
OBSERVATIONAL INFORMATION
Arc information
Arc length 6930 days
Unobserved 310 days

 

Astrometry summary
Optical
RMS of residuals 0.464520"
First observation 2001-02-02.47394
Last observation 2020-01-24.55277
Number (Discarded) 1147 (7)
Radar
First observation 2006-10-02
Last observation 2006-10-02
Delay (Discarded) 1 (0)
Doppler (Discarded) 1 (0)
Total (Discarded) 2 (0)

 

Get the observational details
Optical observations (ASCII file)
Radar observations

 

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