(13446) Almarkim Main-belt Asteroid
Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Actor Al Markim (b. 1927) played cadet Astro in the 1950 TV series Tom Corbett, Space Cadet. His role on the rocketship Polaris was to control the engines on the power deck. Besides acting in many early TV shows, he co-produced some early TV series.Naming citation (WGSBN Bull. 3, #12, 9), IAU / Minor Planet Center, via NASA/JPL
Where Almarkim is today
Seen from above the solar system on 2026-10-14: Almarkim is 3.25 au from the Sun and 3.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13446 |
| Provisional designation | 3087 P-L |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.9 km (#4,599 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.147 |
| Rotation period | 5.51 hours |
| Absolute magnitude (H) | 12.71 |
| Orbital period | 5.38 years |
| Semi-major axis | 3.07 au |
| Perihelion – aphelion | 2.78 – 3.36 au |
| Eccentricity | 0.0959 |
| Inclination | 8.33° |
| Closest distance between its orbit and Earth's (MOID) | 1.78 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