(4702) Berounka Main-belt Asteroid
Discovered on 23 April 1987 by A. Mrkos at Klet.
Named for a Czech river originating in Plzeň as a confluence of four rivers: Mže, Radbúza, Úhlava and Úslava. It continues through the town of Beroun to its confluence with the Vltava river near Prague. Name proposed by Z. Moravec.Naming citation (19990402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Berounka is today
Seen from above the solar system on 2026-10-14: Berounka is 3.03 au from the Sun and 2.12 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4702 |
| Provisional designation | 1987 HW |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.48 km (#6,163 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.345 |
| Spectral type | S |
| Absolute magnitude (H) | 12.7 |
| Orbital period | 4.67 years |
| Semi-major axis | 2.79 au |
| Perihelion – aphelion | 2.53 – 3.05 au |
| Eccentricity | 0.0930 |
| Inclination | 9.36° |
| Closest distance between its orbit and Earth's (MOID) | 1.55 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.