(578) Happelia Main-belt Asteroid
Discovered on 1 November 1905 by M. F. Wolf at Heidelberg.
Where Happelia is today
Seen from above the solar system on 2026-10-14: Happelia is 2.72 au from the Sun and 3.71 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 578 |
| Provisional designation | A905 VJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 69.3 km (#475 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0769 |
| Rotation period | 10.1 hours |
| Spectral type | Xc |
| Absolute magnitude (H) | 9.53 |
| Orbital period | 4.56 years |
| Semi-major axis | 2.75 au |
| Perihelion – aphelion | 2.21 – 3.29 au |
| Eccentricity | 0.196 |
| Inclination | 6.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.20 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 1 November 1905
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
← (577) Rhea · (579) Sidonia →