(431) Nephele Main-belt Asteroid
Discovered on 18 December 1897 by A. Charlois at Nice.
Where Nephele is today
Seen from above the solar system on 2026-10-14: Nephele is 3.68 au from the Sun and 4.35 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 431 |
| Provisional designation | A897 YB |
| Orbit class | Main-belt Asteroid |
| Diameter | 102 km (#223 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0550 |
| Rotation period | 13.5 hours |
| Spectral type | B |
| Absolute magnitude (H) | 9.08 |
| Orbital period | 5.58 years |
| Semi-major axis | 3.15 au |
| Perihelion – aphelion | 2.60 – 3.69 au |
| Eccentricity | 0.173 |
| Inclination | 1.83° |
| Closest distance between its orbit and Earth's (MOID) | 1.59 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 18 December 1897
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
← (430) Hybris · (432) Pythia →