Research Article
Development of a Landing Mechanism for Asteroids with Soft Surface
Table 1
Landing environments of some asteroids and comets.
| | | Eros (asteroid) [1, 18] | Itokawa (asteroid) [19] | Lutetia (asteroid) [20] | Churyumov-Gerasimenko (comet) [21] | Wirtanen (comet) [16, 22] |
| | Diameter | 8.7–31.8 km | 1070 m × 588 m × 418 m | 98.3 ± 5.9 km | 3.44 km | 1.2 km | | Gravity | 0.0024–0.0059 m/s2 | 10−6–10−5 m/s2
( = 3.51 × 1010 kg) | 0.034 m/s2
( = 1.22 × 1018 kg) | 10−4 m/s2
( = 8 × 1012 kg) | 10−4–10−5 m/s2 | | Escape velocity | About 10 m/s | 2.1 × 10−4 × 5.4 × 10−3 m/s | 41 m/s | 0.4 m/s | 0.08–0.25 m/s | | Rotation period | 5.27 hours | 12.1324 ± 0.0001 hours | 8.17 ± 0.01 hours | 12.4–12.7 hours | 6 ± 0.3 hours | | Pressure | About 0 Pa | About 0 Pa | About 0 Pa | About 0 Pa | About 0 Pa | | Topography | Rough | Rough | Rough | Rough | Rough |
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