(3099) Hergenrother Main-belt Asteroid
Discovered on 3 April 1940 by Y. Vaisala at Turku.
Where Hergenrother is today
Seen from above the solar system on 2026-10-14: Hergenrother is 3.07 au from the Sun and 2.37 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3099 |
| Provisional designation | 1940 GF |
| Orbit class | Main-belt Asteroid |
| Diameter | 14.7 km (#3,205 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.224 |
| Rotation period | 25.7 hours |
| Absolute magnitude (H) | 11.65 |
| Orbital period | 4.88 years |
| Semi-major axis | 2.88 au |
| Perihelion – aphelion | 2.29 – 3.46 au |
| Eccentricity | 0.203 |
| Inclination | 15.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.31 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.