(9790) Deipyrus Jupiter Trojan
Discovered on 25 July 1995 by Spacewatch at Kitt Peak.
Deipyrus was one of seven leaders of sentinels sent to guard the Achaean ships. He was later killed in battle by Helenus, King Priam's son.Naming citation (WGSBN Bull. 1, #12, 7), IAU / Minor Planet Center, via NASA/JPL
Where Deipyrus is today
Seen from above the solar system on 2026-10-14: Deipyrus is 5.50 au from the Sun and 6.44 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9790 |
| Provisional designation | 1995 OK8 |
| Orbit class | Jupiter Trojan |
| Diameter | 32.8 km (#1,238 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0790 |
| Rotation period | 8.01 hours |
| Absolute magnitude (H) | 11.0 |
| Orbital period | 12.0 years |
| Semi-major axis | 5.24 au |
| Perihelion – aphelion | 4.95 – 5.52 au |
| Eccentricity | 0.0539 |
| Inclination | 5.92° |
| Closest distance between its orbit and Earth's (MOID) | 3.96 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.