(20557) Davidkulka Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
David Kulka mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. He teaches at the South Peninsula Hebrew Day School, Sunnyvale, California.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Davidkulka is today
Seen from above the solar system on 2026-10-14: Davidkulka is 2.62 au from the Sun and 2.62 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20557 |
| Provisional designation | 1999 RB116 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.95 km (#12,860 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.179 |
| Rotation period | 5.84 hours |
| Absolute magnitude (H) | 14.15 |
| Orbital period | 3.67 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 2.13 – 2.62 au |
| Eccentricity | 0.102 |
| Inclination | 6.27° |
| Closest distance between its orbit and Earth's (MOID) | 1.13 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called David
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