(13129) Poseidonios Main-belt Asteroid
Discovered on 12 August 1994 by E. W. Elst at La Silla.
Poseidonios (c. 135 BCE--c. 51 BCE) was a Greek Stoic philosopher, astronomer and geographer. He was celebrated as a polymath who attempted to create a unified system for understanding human intellect and the universe, which would provide an explanation for human behavior.Naming citation (MPC batch dated 2016-04-22), IAU / Minor Planet Center, via NASA/JPL
Where Poseidonios is today
Seen from above the solar system on 2026-10-14: Poseidonios is 2.66 au from the Sun and 1.69 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13129 |
| Provisional designation | 1994 PC29 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.76 km (#7,932 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0810 |
| Absolute magnitude (H) | 14.4 |
| Orbital period | 4.52 years |
| Semi-major axis | 2.74 au |
| Perihelion – aphelion | 2.47 – 3.00 au |
| Eccentricity | 0.0972 |
| Inclination | 8.02° |
| Closest distance between its orbit and Earth's (MOID) | 1.45 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 12 August 1994
- (7142) Spinoza
- (8550) Hesiodos
- (9640) Lippens
- (9641) Demaziere
- (9778) Isabelallende
- (9879) Mammuthus
- (9880) Stegosaurus
- (10151) Rubens
- (10361) Bunsen
- (10841) Ericforbes
- (11095) Havana
- (11583) Breuer