(4169) Celsius Outer Main-belt Asteroid
Discovered on 16 March 1980 by C.-I. Lagerkvist at La Silla.
Where Celsius is today
Seen from above the solar system on 2026-10-14: Celsius is 3.19 au from the Sun and 2.96 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4169 |
| Provisional designation | 1980 FO3 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 37.3 km (#1,062 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0570 |
| Rotation period | 10.9 hours |
| Absolute magnitude (H) | 11.29 |
| Orbital period | 6.28 years |
| Semi-major axis | 3.40 au |
| Perihelion – aphelion | 2.85 – 3.95 au |
| Eccentricity | 0.162 |
| Inclination | 9.99° |
| Closest distance between its orbit and Earth's (MOID) | 1.86 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 16 March 1980
- (2902) Westerlund
- (3386) Klementinum
- (3634) Iwan
- (4593) Reipurth
- (5221) Fabribudweis
- (5498) Gustafsson
- (5938) Keller
- (6150) Neukum
- (6687) Lahulla
- (6945) Dahlgren
- (7548) Engstrom
- (7983) Festin