Nemausa
51 Nemausa (A858 BA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 138.159 km
- Rotation period
- 7.783 hours
- Albedo
- 0.1
- Absolute magnitude H
- 7.72 mag
- Spectral type (Tholen)
- CU
- Spectral type (SMASS)
- Ch
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 2.37 AU
- Eccentricity
- 0.066
- Inclination
- 9.97°
- Perihelion distance
- 2.21 AU
- Aphelion distance
- 2.52 AU
- Orbital period
- 1,330 days
- Perihelion passage
- JD 2460902.862
- Earth MOID
- 1.21 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 138 km across — 34.5% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,330 Earth days (about 3.6 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.