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(99942) Apophis  ▹ 
OBSERVATIONAL INFORMATION
Arc information
Arc length 3946 days
Unobserved 1054 days

 

Astrometry summary
Optical
RMS of residuals 0.446863"
First observation 2004-03-15.10789
Last observation 2015-01-03.26308
Number (Discarded) 4469 (77)
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.





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