(99942) Apophis
▹
OBSERVATIONAL INFORMATION
Arc information
Arc length |
6197 |
days |
Unobserved |
1 |
days |
Astrometry summary
Optical
RMS of residuals |
0.295622" |
First observation |
2004-03-15.10789 |
Last observation |
2021-03-02.927649 |
Number (Discarded) |
5827 (5) |
|
Radar
First observation |
2005-01-27 |
Last observation |
2013-03-15 |
Delay (Discarded) |
17 (0) |
Doppler (Discarded) |
29 (0) |
Total (Discarded) |
46 (0) |
|
Note. The ASCII file is in a format suitable for OrbFit input.