(4186) Tamashima Main-belt Asteroid
Discovered on 18 February 1977 by Kosai, H., Hurukawa, K. at Kiso.
Where Tamashima is today
Seen from above the solar system on 2026-10-14: Tamashima is 3.17 au from the Sun and 4.04 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4186 |
| Provisional designation | 1977 DT1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 29.9 km (#1,364 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0600 |
| Rotation period | 20.9 hours |
| Absolute magnitude (H) | 11.54 |
| Orbital period | 5.48 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.89 – 3.33 au |
| Eccentricity | 0.0702 |
| Inclination | 24.1° |
| Closest distance between its orbit and Earth's (MOID) | 2.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 18 February 1977
- (2330) Ontake
- (2924) Mitake-mura
- (2960) Ohtaki
- (3249) Musashino
- (3391) Sinon
- (3607) Naniwa
- (4812) Hakuhou
- (4963) Kanroku
- (5017) Tenchi
- (5082) Nihonsyoki
- (7104) Manyousyu
- (7105) Yousyozan