Moon
Dimorphos
Didymos's small moon; the first celestial body whose orbit humanity deliberately changed (DART, 2022). After the impact its period dropped from 11 h 55 min to 11 h 23 min.
| Type | Moon |
|---|---|
| Parent body | 65803 Didymos |
| Radius | 0 km · 1.19 × 10⁻⁵ R⊕ |
| Mass | 4.300 × 10⁹ kg · 7.20 × 10⁻¹⁶ M⊕ |
| Mean density | 2.39 g/cm³ |
| Rotation period | Tidally locked (always shows the same face) |
| Orbital radius | 1 km (65803 Didymos) |
| Eccentricity | 0.030 |
| Orbital period | 11.4 hours |