(18268) Dardanos Jupiter Trojan
Discovered on 16 October 1977 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Dardanos was a son of Zeus and a nymph, mythical ancestor of the Trojans.Naming citation (20010309/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Dardanos is today
Seen from above the solar system on 2026-10-14: Dardanos is 5.27 au from the Sun and 4.84 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18268 |
| Provisional designation | 2140 T-3 |
| Orbit class | Jupiter Trojan |
| Diameter | 20.4 km (#2,163 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0740 |
| Absolute magnitude (H) | 12.07 |
| Orbital period | 11.7 years |
| Semi-major axis | 5.16 au |
| Perihelion – aphelion | 4.66 – 5.66 au |
| Eccentricity | 0.0965 |
| Inclination | 16.6° |
| Closest distance between its orbit and Earth's (MOID) | 3.70 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 16 October 1977
- (3798) de Jager
- (3936) Elst
- (4044) Erikhog
- (4108) Rakos
- (4722) Agelaos
- (4753) Phidias
- (4754) Panthoos
- (5610) Balster
- (5699) Munch
- (5700) Homerus
- (5984) Lysippus
- (6055) Brunelleschi