Massalia
20 Massalia (A852 SA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 135.68 km
- Rotation period
- 8.098 hours
- Albedo
- 0.241
- Absolute magnitude H
- 6.54 mag
- Spectral type (Tholen)
- S
- Spectral type (SMASS)
- S
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 2.41 AU
- Eccentricity
- 0.144
- Inclination
- 0.709°
- Perihelion distance
- 2.06 AU
- Aphelion distance
- 2.75 AU
- Orbital period
- 1,360 days
- Perihelion passage
- JD 2460886.589
- Earth MOID
- 1.08 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 136 km across — 33.9% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,360 Earth days (about 3.7 years).
- Sunlight needs about 20 minutes to reach it on average (semi-major axis 2.4 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.