(10433) Ponsen Main-belt Asteroid
Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Jaap Ponsen (1931-1961) was a Leiden astronomer who worked on variable stars and made observations at the southern Leiden Station at Hartebeespoortdam. He died on his return trip to Leiden. The citation was prepared by U. Schwarz.Naming citation (20010804/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ponsen is today
Seen from above the solar system on 2026-10-14: Ponsen is 2.87 au from the Sun and 3.50 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10433 |
| Provisional designation | 4716 P-L |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.60 km (#13,699 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.236 |
| Absolute magnitude (H) | 14.51 |
| Orbital period | 4.58 years |
| Semi-major axis | 2.76 au |
| Perihelion – aphelion | 2.56 – 2.96 au |
| Eccentricity | 0.0721 |
| Inclination | 6.84° |
| Closest distance between its orbit and Earth's (MOID) | 1.55 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Jaap
All asteroids named after someone called Jaap
Also discovered on 24 September 1960
- (1743) Schmidt
- (1744) Harriet
- (1776) Kuiper
- (1777) Gehrels
- (1795) Woltjer
- (1808) Bellerophon
- (1809) Prometheus
- (1810) Epimetheus
- (1811) Bruwer
- (1812) Gilgamesh
- (1846) Bengt
- (1868) Thersites