(6939) Lestone Main-belt Asteroid
Discovered on 22 September 1952 by L. E. Cunningham at Mount Wilson.
Where Lestone is today
Seen from above the solar system on 2026-10-14: Lestone is 2.61 au from the Sun and 2.24 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 6939 |
| Provisional designation | 1952 SW1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.30 km (#10,056 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.229 |
| Rotation period | 2.82 hours |
| Absolute magnitude (H) | 13.92 |
| Orbital period | 4.17 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.32 – 2.86 au |
| Eccentricity | 0.103 |
| Inclination | 14.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.31 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.