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Table 2
Apophis orientation for the nominal rotation model during the Herschel observations.
| Julian date | z-axis [deg] | rot. angle | Rotation axis [deg] | ||
| mid-time | λecl | βecl | φ0 [deg] | λecl | βecl |
|
|
|||||
| First visit on Jan. 6, 2013: | |||||
| 2 456 298.50745 | 19.9 | –58.5 | 243.6 | 234.53 | –75.51 |
| 2 456 298.53059 | 11.5 | –57.5 | 241.2 | 234.39 | –75.99 |
| 2 456 298.55258 | 3.7 | –56.4 | 239.3 | 234.44 | –76.45 |
| 2 456 298.57455 | 356.4 | –55.2 | 237.8 | 234.74 | –76.92 |
| Second visit on Mar. 14, 2013: | |||||
| 2 456 365.77802 | 294.3 | –72.9 | 96.2 | 233.35 | –70.32 |
| 2 456 365.78760 | 293.1 | –72.1 | 97.7 | 232.58 | –70.53 |
| 2 456 365.79719 | 291.9 | –71.3 | 99.2 | 231.81 | –70.76 |
| 2 456 365.80677 | 290.6 | –70.6 | 100.6 | 231.04 | –71.01 |
| 2 456 365.81635 | 289.3 | –69.8 | 101.9 | 230.38 | –71.25 |
| 2 456 365.82594 | 287.9 | –69.0 | 103.2 | 229.78 | –71.49 |
Notes. The angular velocity was 5.00 radians/day during the first visit and 5.02 radians/day during the second visit (around the true spin axis at the given times). Numbers are given in the Apophis-centric frame.
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