(4632) Udagawa Main-belt Asteroid
Discovered on 17 December 1987 by T. Kojima at Chiyoda.
Tetsuo Udagawa (b. 1947) was engaged in the development of a laser holographic system for precise measurements. More recently he has been involved with space and military optics, as well as image projection optics. He also loves mountaineering and taking photographs of mountains.Naming citation (20100130/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Udagawa is today
Seen from above the solar system on 2026-10-14: Udagawa is 1.92 au from the Sun and 1.15 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4632 |
| Provisional designation | 1987 YB |
| Orbit class | Main-belt Asteroid |
| Rotation period | 3.57 hours |
| Absolute magnitude (H) | 13.65 |
| Orbital period | 3.28 years |
| Semi-major axis | 2.21 au |
| Perihelion – aphelion | 1.83 – 2.59 au |
| Eccentricity | 0.172 |
| Inclination | 6.49° |
| Closest distance between its orbit and Earth's (MOID) | 0.840 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Tetsuo
All asteroids named after someone called Tetsuo
Also discovered on 17 December 1987
More named asteroids discovered by T. Kojima
- (3774) Megumi
- (3786) Yamada
- (3829) Gunma
- (3995) Sakaino
- (3998) Tezuka
- (3999) Aristarchus
- (4041) Miyamotoyohko
- (4156) Okadanoboru
- (4288) Tokyotech
- (4493) Naitomitsu
- (4576) Yanotoyohiko
- (4866) Badillo
← (4631) Yabu · (4633) Marinbica →