(11239) Marcgraf Main-belt Asteroid
Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Georg Marcgraf (1610-1643), astronomer, mathematician and naturalist, made the first serious study of the southern sky during his stay in Dutch Brazil. He is also known for his zoological and cartographic work during the reign of Johan Maurits in Dutch Brazil. Marcgraf died in 1643 in Luanda (then Dutch Angola).Naming citation (20040306/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Marcgraf is today
Seen from above the solar system on 2026-10-14: Marcgraf is 2.36 au from the Sun and 3.24 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11239 |
| Provisional designation | 4141 P-L |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.35 km (#9,965 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.225 |
| Absolute magnitude (H) | 13.99 |
| Orbital period | 4.04 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.08 – 2.99 au |
| Eccentricity | 0.179 |
| Inclination | 4.37° |
| Closest distance between its orbit and Earth's (MOID) | 1.10 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Georg
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All asteroids named after someone called Georg
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