Asteroids · 3
Binary Asteroids
Asteroids with a single moon, such as Didymos and its moonlet Dimorphos.
A Koronis-family main-belt asteroid imaged by the Galileo spacecraft in 1993, which revealed its tiny moon Dactyl — the first confirmed asteroid moon.
CategoryMain beltTypeSilicaceous (S)Diameter≈ 60 × 25 × 19 kmDiscovered1884A binary Jupiter Trojan trailing Jupiter at the L5 'Trojan camp', and the final flyby target of NASA's Lucy mission.
CategoryTrojanDiameter140 kmDiscovered1906A near-Earth binary asteroid whose small moon, Dimorphos, was struck by NASA's DART in 2022 — humanity's first test of asteroid deflection.
CategoryNear-EarthTypeSilicaceous (S)Diameter780 mDiscovered1996