(2073) Janacek Main-belt Asteroid
Discovered on 19 February 1974 by L. Kohoutek at Bergedorf.
Where Janacek is today
Seen from above the solar system on 2026-10-14: Janacek is 2.47 au from the Sun and 1.66 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2073 |
| Provisional designation | 1974 DK |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.75 km (#5,249 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.154 |
| Rotation period | 3.56 hours |
| Spectral type | X |
| Absolute magnitude (H) | 13.02 |
| Orbital period | 4.48 years |
| Semi-major axis | 2.72 au |
| Perihelion – aphelion | 2.42 – 3.02 au |
| Eccentricity | 0.110 |
| Inclination | 2.96° |
| Closest distance between its orbit and Earth's (MOID) | 1.43 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.