(8274) Soejima Main-belt Asteroid
Discovered on 15 October 1990 by Endate, K., Watanabe, K. at Kitami.
Named in honor of Tsutomu Soejima (b. 1950), a Japanese amateur astronomer and secretary of the Saga Astronomical Society since 1989. He is a board member of the astronomical society's observatory, the Tara Observatory and the Saga City Observatory. His main interests are comet hunting and photography. Name proposed by the discoverers following a suggestion by Y. Yamada.Naming citation (19990728/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Soejima is today
Seen from above the solar system on 2026-10-14: Soejima is 2.73 au from the Sun and 3.72 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8274 |
| Provisional designation | 1990 TJ1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.39 km (#14,248 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.268 |
| Rotation period | 61.9 hours |
| Absolute magnitude (H) | 14.39 |
| Orbital period | 3.43 years |
| Semi-major axis | 2.27 au |
| Perihelion – aphelion | 1.82 – 2.73 au |
| Eccentricity | 0.202 |
| Inclination | 3.73° |
| Closest distance between its orbit and Earth's (MOID) | 0.822 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Tsutomu
All asteroids named after someone called Tsutomu
Also discovered on 15 October 1990
- (5187) Domon
- (5188) Paine
- (6905) Miyazaki
- (6964) Kunihiko
- (8660) Sano
- (9333) Hiraimasa
- (10318) Sumaura
- (10760) Ozeki
- (12706) Tanezaki
- (14395) Tommorgan
- (16503) Ayato
- (19160) Chikayoshitomi
More named asteroids discovered by Endate, K., Watanabe, K.
- (4042) Okhotsk
- (4126) Mashu
- (4460) Bihoro
- (4491) Otaru
- (4497) Taguchi
- (4508) Takatsuki
- (4547) Massachusetts
- (4585) Ainonai
- (4607) Seilandfarm
- (4641) Ayako
- (4712) Iwaizumi
- (4773) Hayakawa
← (8273) Apatheia · (8275) Inca →