(194) Prokne Main-belt Asteroid
Discovered on 21 March 1879 by C. H. F. Peters at Clinton.
Where Prokne is today
Seen from above the solar system on 2026-10-14: Prokne is 3.23 au from the Sun and 3.94 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 194 |
| Provisional designation | A879 FA |
| Orbit class | Main-belt Asteroid |
| Diameter | 162 km (#65 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0570 |
| Rotation period | 15.7 hours |
| Spectral type | C |
| Absolute magnitude (H) | 7.83 |
| Orbital period | 4.24 years |
| Semi-major axis | 2.62 au |
| Perihelion – aphelion | 2.00 – 3.24 au |
| Eccentricity | 0.237 |
| Inclination | 18.5° |
| Closest distance between its orbit and Earth's (MOID) | 0.990 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.