(4340) Dence Main-belt Asteroid
Discovered on 4 May 1986 by C. S. Shoemaker at Palomar.
Where Dence is today
Seen from above the solar system on 2026-10-14: Dence is 2.01 au from the Sun and 2.96 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4340 |
| Provisional designation | 1986 JZ |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.11 km (#6,458 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.155 |
| Rotation period | 7.55 hours |
| Spectral type | S |
| Absolute magnitude (H) | 12.77 |
| Orbital period | 3.71 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 1.85 – 2.95 au |
| Eccentricity | 0.229 |
| Inclination | 25.1° |
| Closest distance between its orbit and Earth's (MOID) | 0.831 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.