(2330) Ontake Main-belt Asteroid
Discovered on 18 February 1977 by Kosai, H., Hurukawa, K. at Kiso.
Named for the conical volcano near the Kiso station. In October 1979, for the first time in its recorded history, the volcano, which is 3063 m high, exhibited small eruptions.Naming citation (MPC 5851), IAU / Minor Planet Center, via NASA/JPL
Where Ontake is today
Seen from above the solar system on 2026-10-14: Ontake is 3.28 au from the Sun and 2.72 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2330 |
| Provisional designation | 1977 DS3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 33.1 km (#1,226 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0400 |
| Absolute magnitude (H) | 11.71 |
| Orbital period | 5.67 years |
| Semi-major axis | 3.18 au |
| Perihelion – aphelion | 3.07 – 3.29 au |
| Eccentricity | 0.0338 |
| Inclination | 8.66° |
| Closest distance between its orbit and Earth's (MOID) | 2.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 18 February 1977
- (2924) Mitake-mura
- (2960) Ohtaki
- (3249) Musashino
- (3391) Sinon
- (3607) Naniwa
- (4186) Tamashima
- (4812) Hakuhou
- (4963) Kanroku
- (5017) Tenchi
- (5082) Nihonsyoki
- (7104) Manyousyu
- (7105) Yousyozan