(29474) Toyoshima Main-belt Asteroid
Discovered on 25 October 1997 by Endate, K., Watanabe, K. at Kitami.
Naoki Toyoshima (b. 1957) is a Japanese amateur astronomer and director of the Jododaira Astronomical Observatory in Fukushima City, Fukushima Prefecture. He is a keen popularizer of astronomy, well known throughout Fukushima Prefecture. His major interests include observing comets, planets and supernovae.Naming citation (WGSBN Bull. 5, #1, 18), IAU / Minor Planet Center, via NASA/JPL
Where Toyoshima is today
Seen from above the solar system on 2026-10-14: Toyoshima is 2.75 au from the Sun and 2.88 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29474 |
| Provisional designation | 1997 UT8 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.67 km (#13,537 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.250 |
| Rotation period | 2.90 hours |
| Absolute magnitude (H) | 14.61 |
| Orbital period | 4.03 years |
| Semi-major axis | 2.53 au |
| Perihelion – aphelion | 2.17 – 2.90 au |
| Eccentricity | 0.145 |
| Inclination | 5.54° |
| Closest distance between its orbit and Earth's (MOID) | 1.16 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Naoki
All asteroids named after someone called Naoki
Also discovered on 25 October 1997
- (8314) Tsuji
- (9673) Kunishimakoto
- (10219) Penco
- (10616) Inouetakeshi
- (10617) Takumi
- (14988) Tryggvason
- (14989) Tutte
- (15916) Shigeoyamada
- (16810) Pavelaleksandrov
- (26213) Ayani
- (27977) Distratis
- (35371) Yokonozaki