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Table 4
2029-b-plane uncertainties (σξ, σζ) and distance Δmin of Apophis from the Earth’s center using four sets of observations.
| S0 | S1 | S2 | S3 | |
|
|
||||
| σξ (km) | 15 | 13 | 13 | 15 |
| σζ (km) | 350 | 217 | 217 | 245 |
| Δmin (km) | 38 080 | 38 663 | 38 645 | 38 350 |
 (km) |
0 | 580 | 562 | 270 |
Notes. The last line compares the difference of the distance with solution S0.
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