(2364) Seillier Main-belt Asteroid
Discovered on 14 April 1978 by H. Debehogne at La Silla.
Where Seillier is today
Seen from above the solar system on 2026-10-14: Seillier is 3.59 au from the Sun and 2.75 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2364 |
| Provisional designation | 1978 GD |
| Orbit class | Main-belt Asteroid |
| Diameter | 19.6 km (#2,249 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.103 |
| Rotation period | 12.3 hours |
| Absolute magnitude (H) | 11.39 |
| Orbital period | 5.65 years |
| Semi-major axis | 3.17 au |
| Perihelion – aphelion | 2.73 – 3.62 au |
| Eccentricity | 0.140 |
| Inclination | 10.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.72 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.