(12133) Titulaer Main-belt Asteroid
Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Dutch astronomer and science writer Chriet Titulaer (b. 1943) is a popularizer of astronomy and space travel. Together with Henk Terlingen, he prepared impressive television programs on the Apollo moon missions.Naming citation (20070926/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Titulaer is today
Seen from above the solar system on 2026-10-14: Titulaer is 3.21 au from the Sun and 2.82 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12133 |
| Provisional designation | 2558 P-L |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.67 km (#5,300 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0900 |
| Rotation period | 5.52 hours |
| Absolute magnitude (H) | 13.67 |
| Orbital period | 5.59 years |
| Semi-major axis | 3.15 au |
| Perihelion – aphelion | 2.68 – 3.62 au |
| Eccentricity | 0.149 |
| Inclination | 5.14° |
| Closest distance between its orbit and Earth's (MOID) | 1.70 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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