(4057) Demophon Jupiter Trojan
Discovered on 15 October 1985 by E. Bowell at Anderson Mesa.
Where Demophon is today
Seen from above the solar system on 2026-10-14: Demophon is 5.33 au from the Sun and 6.32 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4057 |
| Provisional designation | 1985 TQ |
| Orbit class | Jupiter Trojan |
| Diameter | 45.7 km (#839 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0770 |
| Rotation period | 29.8 hours |
| Absolute magnitude (H) | 10.27 |
| Orbital period | 12.0 years |
| Semi-major axis | 5.23 au |
| Perihelion – aphelion | 4.62 – 5.85 au |
| Eccentricity | 0.118 |
| Inclination | 2.87° |
| Closest distance between its orbit and Earth's (MOID) | 3.63 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 15 October 1985
- (3564) Talthybius
- (3595) Gallagher
- (3639) Weidenschilling
- (4281) Pounds
- (4445) Jimstratton
- (4446) Carolyn
- (4665) Muinonen
- (4696) Arpigny
- (4739) Tomahrens
- (5463) Danwelcher
- (5554) Keesey
- (6206) Corradolamberti