(5811) Keck Main-belt Asteroid
Discovered on 19 May 1988 by E. F. Helin at Palomar.
Where Keck is today
Seen from above the solar system on 2026-10-14: Keck is 1.85 au from the Sun and 1.14 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5811 |
| Provisional designation | 1988 KC |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.65 km (#6,948 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.256 |
| Rotation period | 30.0 hours |
| Absolute magnitude (H) | 12.98 |
| Orbital period | 4.19 years |
| Semi-major axis | 2.60 au |
| Perihelion – aphelion | 1.81 – 3.39 au |
| Eccentricity | 0.302 |
| Inclination | 10.3° |
| Closest distance between its orbit and Earth's (MOID) | 0.837 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.