(18493) Demoleon Jupiter Trojan
Discovered on 17 April 1996 by E. W. Elst at La Silla.
Demoleon, a Trojan warrior and son of Antenor, was struck in the head by Achilles' spear.Naming citation (20100527/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Demoleon is today
Seen from above the solar system on 2026-10-14: Demoleon is 5.43 au from the Sun and 4.68 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18493 |
| Provisional designation | 1996 HV9 |
| Orbit class | Jupiter Trojan |
| Diameter | 33.5 km (#1,210 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0830 |
| Rotation period | 14.4 hours |
| Absolute magnitude (H) | 10.84 |
| Orbital period | 12.1 years |
| Semi-major axis | 5.28 au |
| Perihelion – aphelion | 4.79 – 5.76 au |
| Eccentricity | 0.0915 |
| Inclination | 17.2° |
| Closest distance between its orbit and Earth's (MOID) | 3.84 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 17 April 1996
- (7537) Solvay
- (8116) Jeanperrin
- (8308) Julie-Melissa
- (9430) Erichthonios
- (9664) Brueghel
- (13177) Hansschmidt
- (13644) Lynnanderson
- (15364) Kenglover
- (15861) Ispahan
- (16730) Nijisseiki
- (16731) Mitsumata
- (23617) Duna