(2160) Spitzer Main-belt Asteroid
Discovered on 7 September 1956 by Indiana University at Brooklyn.
Where Spitzer is today
Seen from above the solar system on 2026-10-14: Spitzer is 2.82 au from the Sun and 2.19 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2160 |
| Provisional designation | 1956 RL |
| Orbit class | Main-belt Asteroid |
| Diameter | 13.6 km (#3,520 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.138 |
| Rotation period | 5.90 hours |
| Absolute magnitude (H) | 12.19 |
| Orbital period | 4.93 years |
| Semi-major axis | 2.90 au |
| Perihelion – aphelion | 2.62 – 3.18 au |
| Eccentricity | 0.0974 |
| Inclination | 2.86° |
| Closest distance between its orbit and Earth's (MOID) | 1.61 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.