Parthenope
11 Parthenope (A850 JA)
📋 A written introduction is coming — for now this page shows official values only.
Physical data
- Diameter
- 142.887 km
- Rotation period
- 13.7204 hours
- Albedo
- 0.191
- Absolute magnitude H
- 6.73 mag
- Spectral type (Tholen)
- S
- Spectral type (SMASS)
- Sk
Orbit
- Orbit class (JPL)
- MBA — Main-belt Asteroid
- Semi-major axis
- 2.45 AU
- Eccentricity
- 0.101
- Inclination
- 4.64°
- Perihelion distance
- 2.2 AU
- Aphelion distance
- 2.7 AU
- Orbital period
- 1,400 days
- Perihelion passage
- JD 2461726.716
- Earth MOID
- 1.19 AU
Earth approach
- Potentially hazardous (PHA)
- No
- Near-Earth object (NEO)
- No
In everyday life
- About 143 km across — 35.7% of the 400 km Seoul–Busan expressway.
- One orbit takes about 1,400 Earth days (about 3.8 years).
- Sunlight needs about 20 minutes to reach it on average (semi-major axis 2.5 AU) — versus about 8 min 19 s to Earth.
Worked out from this object's official values.