(2856) Roser Main-belt Asteroid
Discovered on 14 April 1933 by K. Reinmuth at Heidelberg.
Where Roser is today
Seen from above the solar system on 2026-10-14: Roser is 3.04 au from the Sun and 2.90 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2856 |
| Provisional designation | 1933 GB |
| Orbit class | Main-belt Asteroid |
| Diameter | 24.0 km (#1,775 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.122 |
| Rotation period | 13.7 hours |
| Absolute magnitude (H) | 11.38 |
| Orbital period | 5.26 years |
| Semi-major axis | 3.03 au |
| Perihelion – aphelion | 3.00 – 3.05 au |
| Eccentricity | 0.00835 |
| Inclination | 9.90° |
| Closest distance between its orbit and Earth's (MOID) | 2.00 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by K. Reinmuth
- (796) Sarita
- (799) Gudula
- (864) Aase
- (909) Ulla
- (910) Anneliese
- (911) Agamemnon
- (913) Otila
- (918) Itha
- (920) Rogeria
- (921) Jovita
- (922) Schlutia
- (923) Herluga
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