Asteroid
65803 Didymos
A near-Earth binary asteroid: the 780 m Didymos and the 150 m Dimorphos orbiting it. NASA's DART spacecraft struck Dimorphos in 2022, shortening its orbital period by 32 minutes; ESA's Hera mission is studying the outcome on site.
| Type | Asteroid |
|---|---|
| Parent body | Sun |
| Radius | 0 km · 6.12 × 10⁻⁵ R⊕ |
| Mass | 5.200 × 10¹¹ kg · 8.71 × 10⁻¹⁴ M⊕ |
| Mean density | 2.09 g/cm³ |
| Rotation period | 2.26 hours |
| Orbital radius | 1.64 AU (Sun) |
| Eccentricity | 0.383 |
| Orbital period | 2.11 years |
| Discovery | 1996, Spacewatch |
| Moon | Dimorphos |
| DART impact | 26 September 2022 |