(147) Protogeneia Main-belt Asteroid
Discovered on 10 July 1875 by L. Schulhof at Vienna.
Where Protogeneia is today
Seen from above the solar system on 2026-10-14: Protogeneia is 3.08 au from the Sun and 2.08 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 147 |
| Provisional designation | A875 NA |
| Orbit class | Main-belt Asteroid |
| Diameter | 133 km (#116 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0492 |
| Rotation period | 7.85 hours |
| Spectral type | C |
| Absolute magnitude (H) | 8.72 |
| Orbital period | 5.56 years |
| Semi-major axis | 3.14 au |
| Perihelion – aphelion | 3.07 – 3.21 au |
| Eccentricity | 0.0218 |
| Inclination | 1.93° |
| Closest distance between its orbit and Earth's (MOID) | 2.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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