(199950) Sierpc Main-belt Asteroid
Discovered on 16 April 2007 by Astronomical Research Observatory at Charleston.
Sierpc is one of the oldest towns in the Mazovie Region of Poland, established at the turn of the 11th century. It is situated at the crossroads of Prussia and Cracow, and is a pivotal railway junction in Poland. Since 2007, high schools in Sierpc have been active in minor-planet discoveries as part of IASC.Naming citation (20120703/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sierpc is today
Seen from above the solar system on 2026-10-14: Sierpc is 2.09 au from the Sun and 2.50 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 199950 |
| Provisional designation | 2007 HK16 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.41 |
| Orbital period | 3.74 years |
| Semi-major axis | 2.41 au |
| Perihelion – aphelion | 2.07 – 2.75 au |
| Eccentricity | 0.142 |
| Inclination | 7.71° |
| Closest distance between its orbit and Earth's (MOID) | 1.07 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.