(2261) Keeler Main-belt Asteroid
Discovered on 20 April 1977 by A. R. Klemola at Mount Hamilton.
Where Keeler is today
Seen from above the solar system on 2026-10-14: Keeler is 2.94 au from the Sun and 2.05 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2261 |
| Provisional designation | 1977 HC |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.32 km (#7,286 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.266 |
| Rotation period | 22.8 hours |
| Absolute magnitude (H) | 13.02 |
| Orbital period | 3.67 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 1.81 – 2.94 au |
| Eccentricity | 0.237 |
| Inclination | 22.7° |
| Closest distance between its orbit and Earth's (MOID) | 0.945 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.