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(99942) Apophis  ▹ 
OBSERVATIONAL INFORMATION
Arc information
Arc length 5929 days
Unobserved 104 days

 

Astrometry summary
Optical
RMS of residuals 0.279309"
First observation 2004-03-15.10789
Last observation 2020-06-08.18194
Number (Discarded) 4523 (4)
Radar
First observation 2005-01-27
Last observation 2013-03-15
Delay (Discarded) 17 (0)
Doppler (Discarded) 29 (0)
Total (Discarded) 46 (0)

 

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

 

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