(4943) Lac d'Orient Main-belt Asteroid
Discovered on 27 July 1987 by E. W. Elst at Haute Provence.
Named for the lake Lac de la Foret d'Orient, situated about 20 km east of the city of Troyes (in the departement de l'Aube, France). The region has great historical interest for its “commanderies” of the so-called Knights of the Temple. The discoverer favors this place very much for vacations, especially in the summer.Naming citation (WGSBN Bull. 5, #19, 5), IAU / Minor Planet Center, via NASA/JPL
Where Lac d'Orient is today
Seen from above the solar system on 2026-10-14: Lac d'Orient is 2.19 au from the Sun and 1.24 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4943 |
| Provisional designation | 1987 OQ |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.44 km (#8,323 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.323 |
| Rotation period | 11.8 hours |
| Absolute magnitude (H) | 13.22 |
| Orbital period | 4.31 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.18 – 3.11 au |
| Eccentricity | 0.176 |
| Inclination | 12.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.20 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.