Table 1
Basic information of some asteroids and their moonlets as targets of space missions.
| Object | Mission | Rotation period | Major axes diameters | Category | References |
|---|---|---|---|---|---|
| 2016 HO3 | Tianwen-2, 2025 | 0.467 h | 100 × 81 × 46 m | NEA, Apollo group | 1 |
| 65803 Didymos | DART, 2022 | 2.26 h | 849 × 851 × 620 m | NEA, Apollo group | 2, 3 |
| Dimorphos | DART, 2022 | 11.9 h(*) | 177 × 174 × 116 m | Moonlet of Didymos | 2, 3 |
| 25143 Itokawa | Hayabusa, 2005 | 12.13 h | 535 × 294 × 209 m | NEA, Apollo group | 4 |
| 162173 Ryugu | Hayabusa2, 2018 | 7.63 h | 1004 × 1000 × 875 m | NEA, Apollo group | 5 |
| 101955 Bennu | OSIRIS-Ex, 2018 | 4.30 h | 506 × 492 × 457 m | NEA, Apollo group | 6 |
| 152830 Dinkinesh | Lucy, 2023 | 3.73 h | 720 m | Main belt | 7 |
| Selam | Lucy, 2023 | 52.67 h | 210 m & 230 m(**) | Moonlet of Dinkinesh | 7 |
Notes. (1) Warner et al. (2021); (2) Naidu et al. (2020); (3) Daly et al. (2023); (4) Fujiwara et al. (2006); (5) Watanabe et al. (2019); (6) Barnouin et al. (2019); (7) Levison et al. (2024). (*)Pre-impact; (**)Selam consists of two near-equal-sized lobes with the diameters listed.
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