Gaspra
951 Gaspra (A916 OJ)
🚀 Visited by spacecraft
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 12.2 km
- Rotation period
- 7.042 hours
- Albedo
- 0.246
- Absolute magnitude H
- 11.49 mag
- Spectral type (Tholen)
- S
- Spectral type (SMASS)
- S
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 2.21 AU
- Eccentricity
- 0.174
- Inclination
- 4.1°
- Perihelion distance
- 1.83 AU
- Aphelion distance
- 2.59 AU
- Orbital period
- 1,200 days
- Perihelion passage
- JD 2460823.998
- Earth MOID
- 0.832 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 12 km across — 3.1% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,200 Earth days (about 3.3 years).
- Sunlight needs about 18 minutes to reach it on average (semi-major axis 2.2 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.