(2947) Kippenhahn Main-belt Asteroid
Discovered on 22 August 1955 by I. Groeneveld at Heidelberg.
Where Kippenhahn is today
Seen from above the solar system on 2026-10-14: Kippenhahn is 2.03 au from the Sun and 2.21 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2947 |
| Provisional designation | 1955 QP1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.59 km (#7,020 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.206 |
| Rotation period | 11.0 hours |
| Absolute magnitude (H) | 12.84 |
| Orbital period | 3.51 years |
| Semi-major axis | 2.31 au |
| Perihelion – aphelion | 2.02 – 2.59 au |
| Eccentricity | 0.124 |
| Inclination | 3.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.