(30925) Todahiroyuki Main-belt Asteroid
Discovered on 15 September 1993 by Endate, K., Watanabe, K. at Kitami.
Hiroyuki Toda (b. 1966) is a public-relations staff member at the Okayama Observatory of Kyoto University. He also works as an astronomy volunteer at the Kurashiki Observatory, working to popularize astronomy in the local area. Hiroyuki is also known for his video observations of meteors.Naming citation (WGSBN Bull. 5, #5, 23), IAU / Minor Planet Center, via NASA/JPL
Where Todahiroyuki is today
Seen from above the solar system on 2026-10-14: Todahiroyuki is 2.32 au from the Sun and 2.40 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 30925 |
| Provisional designation | 1993 RD2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.81 km (#9,205 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.397 |
| Absolute magnitude (H) | 13.27 |
| Orbital period | 4.21 years |
| Semi-major axis | 2.61 au |
| Perihelion – aphelion | 2.28 – 2.93 au |
| Eccentricity | 0.123 |
| Inclination | 15.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.28 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Hiroyuki
- (7186) Tomioka
- (9642) Takatahiro
- (11072) Hiraoka
- (11928) Akimotohiro
- (19392) Oyamada
- (27816) Naitohiroyuki
- (31402) Negishi
- (46649) Tsudahiroyuki
All asteroids named after someone called Hiroyuki
Also discovered on 15 September 1993
- (8039) Grandprism
- (9381) Lyon
- (10356) Rudolfsteiner
- (10557) Rowland
- (10558) Karlstad
- (11083) Caracas
- (11572) Schindler
- (12356) Carlscheele
- (13113) Williamyeats
- (14911) Fukamatsu
- (15786) Hoshioka
- (17544) Kojiroishikawa