Open Access
Table 1.
Orbital parameters of the asteroid (99942) Apophis before and after the 2029 close encounter with the Earth, taken from Souchay et al. (2014a, b).
| Parameter | Before | After |
|---|---|---|
| e | 0.191116 | 0.188586 |
| a [au] | 0.922432 | 1.101692 |
| i [°] | 3.341355 | 2.234257 |
| q = a(1 − e) [au] | 0.746140 | 0.893920 |
| Q = a(1 + e) [au] | 1.098724 | 1.309456 |
| Ω [°] | 204.61 | 204.29 |
| ω [°] | 126.54 | 71.88 |
| T [day] | 323.55 | 422.31 |
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