(18263) Anchialos Jupiter Trojan
Discovered on 25 September 1973 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
The Greek heroes Anchialos and Menestheus were together on their chariot when they were killed by Hector.Naming citation (20010705/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Anchialos is today
Seen from above the solar system on 2026-10-14: Anchialos is 5.33 au from the Sun and 6.25 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18263 |
| Provisional designation | 5167 T-2 |
| Orbit class | Jupiter Trojan |
| Diameter | 21.3 km (#2,046 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.129 |
| Rotation period | 10.4 hours |
| Absolute magnitude (H) | 11.46 |
| Orbital period | 11.9 years |
| Semi-major axis | 5.21 au |
| Perihelion – aphelion | 5.00 – 5.43 au |
| Eccentricity | 0.0413 |
| Inclination | 10.6° |
| Closest distance between its orbit and Earth's (MOID) | 4.02 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 25 September 1973
- (3157) Novikov
- (4303) Savitskij
- (4811) Semashko
- (4877) Humboldt
- (5412) Rou
- (6162) Prokhorov
- (6682) Makarij
- (6938) Soniaterk
- (8319) Antiphanes
- (8773) Torquilla
- (8774) Viridis
- (8974) Gregaria