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Table 2
Estimates of populations Nmb(>D), Nneo(>D), and encounter frequencies ∆t for Apophis itself, LL-like NEOs from Flora, and all NEOs.
| Apophis D | 420m | 380 m |
|---|---|---|
| Apophis ∆t | 430 000 yr | 430 000 yr |
| Flora Nmb | 21 000 ± 2000 | 23 000 ± 2000 |
| Flora Nneo | 610 ± 140 | 670 ± 150 |
| Flora ∆t | 13 000 ± 3500 yr | 12000 ± 3100 yr |
| NEOs Nneo | 3380 ± 300 | 3980 ± 350 |
| NEOs ∆t | 4620 ± 720 yr | 3900 ± 600 yr |
Notes. Values depend on the assumed size D of Apophis.
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