(5336) Kley Main-belt Asteroid
Discovered on 7 May 1991 by N. Kawasato at Uenohara.
Willy Kley (1958–2021) was a German astrophysicist and a Professor of Computational Astrophysics at the University of Tübingen, Germany. He was an expert on hydrodynamical simulations in the context of the formation of planets and planetary systems with a special focus on planet-disk interaction and planet migration.Naming citation (WGSBN Bull. 2, #7, 6), IAU / Minor Planet Center, via NASA/JPL
Where Kley is today
Seen from above the solar system on 2026-10-14: Kley is 3.50 au from the Sun and 2.54 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5336 |
| Provisional designation | 1991 JE1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 25.3 km (#1,672 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0580 |
| Rotation period | 12.5 hours |
| Absolute magnitude (H) | 11.95 |
| Orbital period | 5.49 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.66 – 3.57 au |
| Eccentricity | 0.146 |
| Inclination | 11.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.67 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 7 May 1991
More named asteroids discovered by N. Kawasato
← (5335) Damocles · (5337) Aoki →