(32720) Simoeisios Jupiter Trojan
Discovered on 16 October 1977 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Simoeisios was a young Trojan hero who was killed by Ajax.Naming citation (20030318/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Simoeisios is today
Seen from above the solar system on 2026-10-14: Simoeisios is 5.26 au from the Sun and 4.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 32720 |
| Provisional designation | 2131 T-3 |
| Orbit class | Jupiter Trojan |
| Diameter | 21.1 km (#2,070 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0990 |
| Rotation period | 8.95 hours |
| Absolute magnitude (H) | 12.11 |
| Orbital period | 11.8 years |
| Semi-major axis | 5.19 au |
| Perihelion – aphelion | 5.12 – 5.27 au |
| Eccentricity | 0.0147 |
| Inclination | 7.51° |
| Closest distance between its orbit and Earth's (MOID) | 4.10 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