(2040) Chalonge Main-belt Asteroid
Discovered on 19 April 1974 by P. Wild at Zimmerwald.
Where Chalonge is today
Seen from above the solar system on 2026-10-14: Chalonge is 3.45 au from the Sun and 2.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2040 |
| Provisional designation | 1974 HA |
| Orbit class | Main-belt Asteroid |
| Diameter | 33.9 km (#1,192 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0310 |
| Rotation period | 10.4 hours |
| Spectral type | Ch |
| Absolute magnitude (H) | 11.63 |
| Orbital period | 5.49 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.52 – 3.71 au |
| Eccentricity | 0.191 |
| Inclination | 14.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.58 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.