(171433) Prothous Jupiter Trojan
Discovered on 7 September 2007 by J. Lacruz at La Canada.
Prothous, leader of Magnesia, son of Tenthredon, was one of the suitors of Helen. He brought 40 ships to the Trojan war and was one of the warriors who hid inside the wooden horse.Naming citation (20080122/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Prothous is today
Seen from above the solar system on 2026-10-14: Prothous is 5.55 au from the Sun and 6.54 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 171433 |
| Provisional designation | 2007 RK35 |
| Orbit class | Jupiter Trojan |
| Diameter | 12.6 km (#3,859 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0770 |
| Absolute magnitude (H) | 13.04 |
| Orbital period | 12.1 years |
| Semi-major axis | 5.27 au |
| Perihelion – aphelion | 4.99 – 5.55 au |
| Eccentricity | 0.0538 |
| Inclination | 5.53° |
| Closest distance between its orbit and Earth's (MOID) | 3.99 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.