(20442) Kaiwunnemann Main-belt Asteroid
Discovered on 10 May 1999 by LINEAR at Socorro.
Kai Wünnemann (b. 1969) is a German professor at Freie Universität Berlin and the Museum für Naturkunde, Berlin. He studies impact processes in the Solar System, is involved with the NASA DART mission, and co-chairs the impact physics working group for the ESA Hera mission. Kai was a winner of the Barringer Award in 2022.Naming citation (WGSBN Bull. 6, #11, 21), IAU / Minor Planet Center, via NASA/JPL
Where Kaiwunnemann is today
Seen from above the solar system on 2026-10-14: Kaiwunnemann is 2.31 au from the Sun and 3.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20442 |
| Provisional designation | 1999 JK52 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.71 km (#15,832 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.317 |
| Absolute magnitude (H) | 15.01 |
| Orbital period | 3.13 years |
| Semi-major axis | 2.14 au |
| Perihelion – aphelion | 1.91 – 2.37 au |
| Eccentricity | 0.107 |
| Inclination | 2.76° |
| Closest distance between its orbit and Earth's (MOID) | 0.893 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Kai
All asteroids named after someone called Kai
Also discovered on 10 May 1999
- (11219) Benbohn
- (11225) Borden
- (11227) Ksenborisova
- (11228) Botnick
- (11229) Brookebowers
- (11230) Deschaffer
- (11231) Schiavo
- (11413) Catanach
- (11414) Allanchu
- (12117) Meagmessina
- (16048) Eddiedai
- (16049) D'Amore