(5815) Shinsengumi Main-belt Asteroid
Discovered on 3 January 1989 by T. Seki at Geisei.
Where Shinsengumi is today
Seen from above the solar system on 2026-10-14: Shinsengumi is 3.08 au from the Sun and 2.50 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5815 |
| Provisional designation | 1989 AH |
| Orbit class | Main-belt Asteroid |
| Diameter | 18.1 km (#2,484 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0940 |
| Rotation period | 37.9 hours |
| Absolute magnitude (H) | 12.28 |
| Orbital period | 5.70 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 3.07 – 3.31 au |
| Eccentricity | 0.0365 |
| Inclination | 22.8° |
| Closest distance between its orbit and Earth's (MOID) | 2.07 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.