(2403) Sumava Main-belt Asteroid
Discovered on 25 September 1979 by A. Mrkos at Klet.
Where Sumava is today
Seen from above the solar system on 2026-10-14: Sumava is 2.79 au from the Sun and 3.77 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2403 |
| Provisional designation | 1979 SQ |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.68 km (#5,285 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.188 |
| Rotation period | 152 hours |
| Absolute magnitude (H) | 12.34 |
| Orbital period | 4.06 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 2.21 – 2.88 au |
| Eccentricity | 0.131 |
| Inclination | 3.31° |
| Closest distance between its orbit and Earth's (MOID) | 1.20 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.