(2227) Otto Struve Main-belt Asteroid
Discovered on 13 September 1955 by Indiana University at Brooklyn.
Where Otto Struve is today
Seen from above the solar system on 2026-10-14: Otto Struve is 1.98 au from the Sun and 2.50 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2227 |
| Provisional designation | 1955 RX |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.67 km (#11,297 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.388 |
| Rotation period | 5.40 hours |
| Absolute magnitude (H) | 13.48 |
| Orbital period | 3.34 years |
| Semi-major axis | 2.24 au |
| Perihelion – aphelion | 1.85 – 2.63 au |
| Eccentricity | 0.174 |
| Inclination | 4.95° |
| Closest distance between its orbit and Earth's (MOID) | 0.867 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.