(5258) Rhoeo Jupiter Trojan
Discovered on 1 January 1989 by Y. Oshima at Gekko.
Rhoeo was thrown in the ocean locked in a chest after her father learned she was pregnant. She was guided by Apollo, her lover, to the island of Delos where she gave birth to Anius, who later prophesied that the siege of Troy would go on for ten years.Naming citation (WGSBN Bull. 1, #1, 9), IAU / Minor Planet Center, via NASA/JPL
Where Rhoeo is today
Seen from above the solar system on 2026-10-14: Rhoeo is 4.95 au from the Sun and 5.92 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5258 |
| Provisional designation | 1989 AU1 |
| Orbit class | Jupiter Trojan |
| Diameter | 53.3 km (#682 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0520 |
| Rotation period | 19.9 hours |
| Absolute magnitude (H) | 10.34 |
| Orbital period | 11.7 years |
| Semi-major axis | 5.14 au |
| Perihelion – aphelion | 4.75 – 5.53 au |
| Eccentricity | 0.0761 |
| Inclination | 5.93° |
| Closest distance between its orbit and Earth's (MOID) | 3.77 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.