Bellona
28 Bellona (A854 EA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 120.9 km
- Rotation period
- 15.706 hours
- Albedo
- 0.1763
- Absolute magnitude H
- 7.21 mag
- Spectral type (Tholen)
- S
- Spectral type (SMASS)
- S
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 2.78 AU
- Eccentricity
- 0.149
- Inclination
- 9.42°
- Perihelion distance
- 2.36 AU
- Aphelion distance
- 3.19 AU
- Orbital period
- 1,690 days
- Perihelion passage
- JD 2460693.339
- Earth MOID
- 1.38 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 121 km across — 30.2% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,690 Earth days (about 4.6 years).
- Sunlight needs about 23 minutes to reach it on average (semi-major axis 2.8 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.