Ida

Asteroid

An asteroid in the main belt that was found to have its own tiny moon, Dactyl.

Facts

TypeAsteroid
Distance from the Sun2.86 AU
Diameter31 km
Mass4.20 × 10^16 kg
Temperature-73°C
Moons1
Orbital period1,767 days
Rotation period4.634 hours
Apparent magnitude12.9
Redshift0
Discovered1884
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