(10247) Amphiaraos Jupiter Trojan
Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
The Greek seer Amphiaraos took part in the campaign of the Argonauts and the “Seven against Thebes”.Naming citation (20000124/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Amphiaraos is today
Seen from above the solar system on 2026-10-14: Amphiaraos is 5.29 au from the Sun and 6.22 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10247 |
| Provisional designation | 6629 P-L |
| Orbit class | Jupiter Trojan |
| Diameter | 26.8 km (#1,552 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0980 |
| Rotation period | 26.2 hours |
| Absolute magnitude (H) | 11.21 |
| Orbital period | 12.2 years |
| Semi-major axis | 5.30 au |
| Perihelion – aphelion | 5.24 – 5.35 au |
| Eccentricity | 0.00969 |
| Inclination | 4.19° |
| Closest distance between its orbit and Earth's (MOID) | 4.26 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