(11) Parthenope Main-belt Asteroid
Discovered on 11 May 1850 by A. de Gasparis at Naples.
Where Parthenope is today
Seen from above the solar system on 2026-10-14: Parthenope is 2.53 au from the Sun and 3.52 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11 |
| Provisional designation | A850 JA |
| Orbit class | Main-belt Asteroid |
| Diameter | 143 km (#97 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.191 |
| Rotation period | 13.7 hours |
| Spectral type | S |
| Absolute magnitude (H) | 6.73 |
| Orbital period | 3.84 years |
| Semi-major axis | 2.45 au |
| Perihelion – aphelion | 2.20 – 2.70 au |
| Eccentricity | 0.101 |
| Inclination | 4.64° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by A. de Gasparis
← (10) Hygiea · (12) Victoria →