(403) Cyane Main-belt Asteroid
Discovered on 18 May 1895 by A. Charlois at Nice.
Where Cyane is today
Seen from above the solar system on 2026-10-14: Cyane is 2.66 au from the Sun and 3.66 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 403 |
| Provisional designation | A895 KA |
| Orbit class | Main-belt Asteroid |
| Diameter | 53.6 km (#676 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.173 |
| Rotation period | 12.3 hours |
| Spectral type | S |
| Absolute magnitude (H) | 9.03 |
| Orbital period | 4.71 years |
| Semi-major axis | 2.81 au |
| Perihelion – aphelion | 2.54 – 3.08 au |
| Eccentricity | 0.0973 |
| Inclination | 9.15° |
| Closest distance between its orbit and Earth's (MOID) | 1.57 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by A. Charlois
- (267) Tirza
- (272) Antonia
- (277) Elvira
- (282) Clorinde
- (283) Emma
- (284) Amalia
- (285) Regina
- (289) Nenetta
- (293) Brasilia
- (294) Felicia
- (296) Phaetusa
- (297) Caecilia
← (402) Chloe · (404) Arsinoe →