(4177) Kohman Outer Main-belt Asteroid
Discovered on 21 September 1987 by E. Bowell at Anderson Mesa.
Truman Paul Kohman (b. 1916), emeritus professor of nuclear chemistry at Carnegie-Mellon University, is codiscoverer of 26Al, an isotope that has given important information about meteorites and the early history of the solar system. He is also an ardent amateur astronomer and teacher.Naming citation (20000523/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Kohman is today
Seen from above the solar system on 2026-10-14: Kohman is 4.24 au from the Sun and 5.22 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4177 |
| Provisional designation | 1987 SS1 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 11.1 km (#4,537 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.120 |
| Absolute magnitude (H) | 13.1 |
| Orbital period | 5.98 years |
| Semi-major axis | 3.29 au |
| Perihelion – aphelion | 2.34 – 4.24 au |
| Eccentricity | 0.289 |
| Inclination | 17.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.35 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 21 September 1987
- (4040) Purcell
- (5677) Aberdonia
- (5771) Somerville
- (6122) Henrard
- (6182) Katygord
- (6474) Choate
- (6512) de Bergh
- (6698) Malhotra
- (7011) Worley
- (9308) Randyrose
- (9563) Kitty
- (11846) Verminnen
More named asteroids discovered by E. Bowell
- (2246) Bowell
- (2264) Sabrina
- (2270) Yazhi
- (2316) Jo-Ann
- (2356) Hirons
- (2357) Phereclos
- (2383) Bradley
- (2409) Chapman
- (2410) Morrison
- (2411) Zellner
- (2421) Nininger
- (2432) Soomana
← (4176) Sudek · (4178) Mimeev →