(540) Rosamunde Main-belt Asteroid
Discovered on 3 August 1904 by M. F. Wolf at Heidelberg.
Where Rosamunde is today
Seen from above the solar system on 2026-10-14: Rosamunde is 2.32 au from the Sun and 2.29 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 540 |
| Provisional designation | A904 PE |
| Orbit class | Main-belt Asteroid |
| Diameter | 19.2 km (#2,328 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.331 |
| Rotation period | 9.35 hours |
| Spectral type | S |
| Absolute magnitude (H) | 10.75 |
| Orbital period | 3.31 years |
| Semi-major axis | 2.22 au |
| Perihelion – aphelion | 2.02 – 2.42 au |
| Eccentricity | 0.0892 |
| Inclination | 5.58° |
| Closest distance between its orbit and Earth's (MOID) | 1.03 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
← (539) Pamina · (541) Deborah →