(577) Rhea Main-belt Asteroid
Discovered on 20 October 1905 by M. F. Wolf at Heidelberg.
👶 Rhea as a baby name🐶 Rhea as a dog name
Where Rhea is today
Seen from above the solar system on 2026-10-14: Rhea is 2.90 au from the Sun and 1.93 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 577 |
| Provisional designation | A905 UR |
| Orbit class | Main-belt Asteroid |
| Diameter | 38.2 km (#1,024 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.230 |
| Rotation period | 12.2 hours |
| Absolute magnitude (H) | 9.45 |
| Orbital period | 5.49 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.63 – 3.59 au |
| Eccentricity | 0.154 |
| Inclination | 5.30° |
| Closest distance between its orbit and Earth's (MOID) | 1.62 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by M. F. Wolf
- (323) Brucia
- (325) Heidelberga
- (328) Gudrun
- (329) Svea
- (330) Adalberta
- (332) Siri
- (333) Badenia
- (334) Chicago
- (339) Dorothea
- (340) Eduarda
- (341) California
- (342) Endymion
← (576) Emanuela · (578) Happelia →