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(4544) Xanthus  ▹ 
OBSERVATIONAL INFORMATION
Arc information
Arc length 11724 days
Unobserved 87 days

 

Astrometry summary
Optical
RMS of residuals 0.473149"
First observation 1989-03-30.35087
Last observation 2021-05-05.24855
Number (Discarded) 920 (1)
Radar
First observation 1990-11-19
Last observation 1990-11-19
Delay (Discarded) 0 (0)
Doppler (Discarded) 1 (0)
Total (Discarded) 1 (0)

 

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

 

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