(2290) Helffrich Main-belt Asteroid
Discovered on 14 February 1932 by K. Reinmuth at Heidelberg.
Where Helffrich is today
Seen from above the solar system on 2026-10-14: Helffrich is 2.25 au from the Sun and 1.38 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2290 |
| Provisional designation | 1932 CD1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 17.3 km (#2,606 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0490 |
| Rotation period | 95.9 hours |
| Absolute magnitude (H) | 12.63 |
| Orbital period | 4.18 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 1.99 – 3.20 au |
| Eccentricity | 0.232 |
| Inclination | 11.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 14 February 1932
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
← (2289) McMillan · (2291) Kevo →