Asteroid, S-type
Ida
The first asteroid found to have its own moon, little Dactyl, spotted by Galileo in 1993.
- Size
- 59.8 × 25.4 × 18.6 km
- Orbit
- 4.8 years
- Distance from Sun
- 2.7 to 3 AU
- Day
- 4.6 hours
- Gravity
- 0.0011 g
- Reflects
- 26% of sunlight
- Visited by
- Galileo, 1993
Can we live on Ida?
Air: none to speak of. You’d live in sealed, pressurised habitats.
Gravity: 0.00 g. Someone who weighs 70 kg on Earth would weigh 0 kg there.
Ground: Silicate rock.
Atmosphere
- None to speak of
Measured by Galileo