(20001) Marinakoren Main-belt Asteroid
Discovered on 5 February 1991 by Arai, M., Mori, H. at Yorii.
Marina Koren (b. 1990) is an American science writer whose work appears in The Atlantic. She covers the full range of space topics, writing with intelligence and humor. Her writing appeared in the 2021 edition of the Best American Science and Nature Writing and received an honorable mention for the National Press Club’s 2020 Michael A. Dornheim Award.Naming citation (WGSBN Bull. 3, #3, 11), IAU / Minor Planet Center, via NASA/JPL
Where Marinakoren is today
Seen from above the solar system on 2026-10-14: Marinakoren is 3.12 au from the Sun and 2.43 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20001 |
| Provisional designation | 1991 CM |
| Orbit class | Main-belt Asteroid |
| Diameter | 22.7 km (#1,885 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0350 |
| Absolute magnitude (H) | 12.45 |
| Orbital period | 5.49 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.72 – 3.50 au |
| Eccentricity | 0.125 |
| Inclination | 17.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.75 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Marina
- (7295) Brozovic
- (12932) Conedera
- (14829) Povalyaeva
- (46592) Marinawatanabe
- (112947) Marinascatena
- (243458) Bubulina
- (263940) Malyshkina
All asteroids named after someone called Marina