(29897) Kossen Outer Main-belt Asteroid
Discovered on 7 April 1999 by LONEOS at Anderson Mesa.
H. Rose Kossen (b. 1935, née Hoitenga) is a retired teacher, formerly of Watson Groen Christian School. She taught high school literature, challenging students to think deeply about the world around them.Naming citation (WGSBN Bull. 1, #1, 16), IAU / Minor Planet Center, via NASA/JPL
Where Kossen is today
Seen from above the solar system on 2026-10-14: Kossen is 3.34 au from the Sun and 3.45 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29897 |
| Provisional designation | 1999 GM61 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 11.6 km (#4,263 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0480 |
| Absolute magnitude (H) | 13.95 |
| Orbital period | 5.80 years |
| Semi-major axis | 3.23 au |
| Perihelion – aphelion | 3.11 – 3.34 au |
| Eccentricity | 0.0353 |
| Inclination | 4.16° |
| Closest distance between its orbit and Earth's (MOID) | 2.10 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Rose
All asteroids named after someone called Rose
Also discovered on 7 April 1999
- (17072) Athiviraham
- (19531) Charton
- (19533) Garrison
- (21608) Gloyna
- (27227) McAdam
- (28364) Bruceelmegreen
- (29880) Andytran
- (29881) Tschopp
- (29886) Randytung
- (31631) Abbywilliams
- (31632) Stephaying
- (31633) Almonte