(1378) Leonce Main-belt Asteroid
Discovered on 21 February 1936 by F. Rigaux at Uccle.
Where Leonce is today
Seen from above the solar system on 2026-10-14: Leonce is 2.68 au from the Sun and 2.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1378 |
| Provisional designation | 1936 DB |
| Orbit class | Main-belt Asteroid |
| Diameter | 21.2 km (#2,054 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0610 |
| Rotation period | 4.33 hours |
| Absolute magnitude (H) | 12.38 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.02 – 2.73 au |
| Eccentricity | 0.151 |
| Inclination | 3.59° |
| Closest distance between its orbit and Earth's (MOID) | 1.00 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.