(5780) Lafontaine Outer Main-belt Asteroid
Discovered on 2 March 1990 by E. W. Elst at La Silla.
Where Lafontaine is today
Seen from above the solar system on 2026-10-14: Lafontaine is 3.80 au from the Sun and 4.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5780 |
| Provisional designation | 1990 EJ2 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 22.6 km (#1,898 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0550 |
| Absolute magnitude (H) | 12.12 |
| Orbital period | 6.12 years |
| Semi-major axis | 3.35 au |
| Perihelion – aphelion | 2.88 – 3.81 au |
| Eccentricity | 0.139 |
| Inclination | 8.64° |
| Closest distance between its orbit and Earth's (MOID) | 1.89 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 2 March 1990
- (4546) Franck
- (6309) Elsschot
- (6483) Nikolajvasil'ev
- (6780) Borodin
- (7285) Seggewiss
- (8652) Acacia
- (9329) Nikolaimedtner
- (11506) Toulouse-Lautrec
- (11876) Doncarpenter
- (13037) Potosi
- (13038) Woolston
- (13513) Manila