(4905) Hiromi Main-belt Asteroid
Discovered on 15 May 1991 by Takahashi, A., Watanabe, K. at Kitami.
Where Hiromi is today
Seen from above the solar system on 2026-10-14: Hiromi is 2.32 au from the Sun and 1.86 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4905 |
| Provisional designation | 1991 JM1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.37 km (#6,247 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.212 |
| Rotation period | 6.04 hours |
| Absolute magnitude (H) | 12.28 |
| Orbital period | 4.19 years |
| Semi-major axis | 2.60 au |
| Perihelion – aphelion | 2.16 – 3.04 au |
| Eccentricity | 0.168 |
| Inclination | 12.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.16 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by Takahashi, A., Watanabe, K.
- (4644) Oumu
- (4677) Hiroshi
- (4746) Doi
- (4795) Kihara
- (5214) Oozora
- (5750) Kandatai
- (6049) Toda
- (6644) Jugaku
- (6778) Tosamakoto
- (7826) Kinugasa
- (10319) Toshiharu
- (12734) Haruna
← (4904) Makio · (4906) Seneferu →