(12249) Hannorein Main-belt Asteroid
Discovered on 16 September 1988 by S. J. Bus at Cerro Tololo.
Hanno Rein (b. 1983) is a German dynamicist and associate professor at the University of Toronto. He develops numerical methods for integrating the motions of gravitationally interacting systems, both within our Solar System and beyond. He created the widely used REBOUND N-body package and the iOS outreach app Exoplanet.Naming citation (WGSBN Bull. 3, #3, 10), IAU / Minor Planet Center, via NASA/JPL
Where Hannorein is today
Seen from above the solar system on 2026-10-14: Hannorein is 3.26 au from the Sun and 3.52 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12249 |
| Provisional designation | 1988 SH2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.44 km (#5,456 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.165 |
| Absolute magnitude (H) | 12.97 |
| Orbital period | 5.19 years |
| Semi-major axis | 3.00 au |
| Perihelion – aphelion | 2.67 – 3.33 au |
| Eccentricity | 0.111 |
| Inclination | 11.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.67 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 16 September 1988
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- (3912) Troja
- (4259) McCoy
- (4794) Bogard
- (6188) Robertpepin
- (8483) Kinwalaniihsia
- (8643) Quercus
- (8644) Betulapendula
- (9025) Polanskey
- (9026) Denevi
- (10063) Erinleeryan
- (10298) Jiangchuanhuang