(1531) Hartmut Main-belt Asteroid
Discovered on 17 September 1938 by A. Bohrmann at Heidelberg.
Where Hartmut is today
Seen from above the solar system on 2026-10-14: Hartmut is 3.02 au from the Sun and 3.69 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1531 |
| Provisional designation | 1938 SH |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.5 km (#4,831 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.275 |
| Rotation period | 25.6 hours |
| Absolute magnitude (H) | 11.82 |
| Orbital period | 4.26 years |
| Semi-major axis | 2.63 au |
| Perihelion – aphelion | 2.22 – 3.03 au |
| Eccentricity | 0.154 |
| Inclination | 12.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.25 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.