(4628) Laplace Main-belt Asteroid
Discovered on 7 September 1986 by E. W. Elst at Smolyan.
Where Laplace is today
Seen from above the solar system on 2026-10-14: Laplace is 2.36 au from the Sun and 2.94 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4628 |
| Provisional designation | 1986 RU4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 18.7 km (#2,390 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.224 |
| Rotation period | 9.02 hours |
| Spectral type | S |
| Absolute magnitude (H) | 11.23 |
| Orbital period | 4.30 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 2.33 – 2.96 au |
| Eccentricity | 0.118 |
| Inclination | 11.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.37 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 7 September 1986
- (5104) Skripnichenko
- (5675) Evgenilebedev
- (6591) Sabinin
- (10499) Sarty
- (11027) Astaf'ev
- (11480) Velikij Ustyug
- (19962) Martynenko