(271) Penthesilea Main-belt Asteroid
Discovered on 13 October 1887 by V. Knorre at Berlin.
Where Penthesilea is today
Seen from above the solar system on 2026-10-14: Penthesilea is 3.21 au from the Sun and 3.88 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 271 |
| Provisional designation | A887 TB |
| Orbit class | Main-belt Asteroid |
| Diameter | 65.9 km (#512 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0450 |
| Rotation period | 18.8 hours |
| Spectral type | PC |
| Absolute magnitude (H) | 9.87 |
| Orbital period | 5.21 years |
| Semi-major axis | 3.00 au |
| Perihelion – aphelion | 2.69 – 3.31 au |
| Eccentricity | 0.103 |
| Inclination | 3.53° |
| Closest distance between its orbit and Earth's (MOID) | 1.70 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by V. Knorre
← (270) Anahita · (272) Antonia →