(18228) Hyperenor Jupiter Trojan
Discovered on 26 March 1971 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Hyperenor was one of the sons of Panthoos and a great hero on the Trojan side.Naming citation (20010309/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hyperenor is today
Seen from above the solar system on 2026-10-14: Hyperenor is 5.00 au from the Sun and 4.47 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18228 |
| Provisional designation | 3163 T-1 |
| Orbit class | Jupiter Trojan |
| Diameter | 23.2 km (#1,833 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0680 |
| Rotation period | 32.8 hours |
| Absolute magnitude (H) | 11.86 |
| Orbital period | 12.1 years |
| Semi-major axis | 5.27 au |
| Perihelion – aphelion | 4.60 – 5.94 au |
| Eccentricity | 0.127 |
| Inclination | 3.20° |
| Closest distance between its orbit and Earth's (MOID) | 3.60 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 26 March 1971
- (5195) Kaendler
- (5491) Kaulbach
- (5492) Thoma
- (5698) Nolde
- (6202) Georgemiley
- (6257) Thorvaldsen
- (6351) Neumann
- (6429) Brancusi
- (6674) Cezanne
- (6752) Ashley
- (7367) Giotto
- (7908) Zwingli