(30717) Berkowski Mars-crossing Asteroid
Discovered on 26 October 1937 by K. Reinmuth at Heidelberg.
Johann Julius Friedrich Berkowski was a Prussian daguerreotypist. On 28 July 1851 at Königsberg (now Kaliningrad), he took the first photograph of a solar eclipse, a daguerreotype that was also the first correctly-exposed photograph of the solar corona.Naming citation (WGSBN Bull. 6, #14, 7), IAU / Minor Planet Center, via NASA/JPL
Where Berkowski is today
Seen from above the solar system on 2026-10-14: Berkowski is 1.60 au from the Sun and 1.82 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 30717 |
| Provisional designation | 1937 UD |
| Orbit class | Mars-crossing Asteroid |
| Rotation period | 5.51 hours |
| Absolute magnitude (H) | 15.04 |
| Orbital period | 3.19 years |
| Semi-major axis | 2.17 au |
| Perihelion – aphelion | 1.44 – 2.89 au |
| Eccentricity | 0.335 |
| Inclination | 8.97° |
| Closest distance between its orbit and Earth's (MOID) | 0.453 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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