147 Protogeneia
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Discovery[1] and Designation | |
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Discovered by: | Lipót Schulhof |
Discovery date: | July 10, 1875 |
Orbital characteristics[2] | |
Epoch December 31, 2006 (JD 2454100.5) | |
Aphelion | 484.856 Gm (3.241 AU) |
Perihelion: | 452.926 Gm (3.028 AU) |
Semi-major axis: | 468.891 Gm (3.134 AU) |
Eccentricity: | 0.034 |
Orbital period: | 2026.831 d (5.55 a) |
Avg. orbital speed: | 16.82 km/s |
Mean anomaly: | 185.625° |
Inclination: | 1.935° |
Longitude of ascending node: | 248.729° |
Argument of perihelion: | 106.744° |
Physical characteristics | |
Dimensions: | 132.9 km |
Mass: | 2.5×1018 kg |
Mean density: | 2.0 g/cm³ |
Equatorial surface gravity: | 0.0371 m/s² |
Equatorial Escape velocity: | 0.0703 km/s |
Sidereal rotation period: | ? d |
Axial tilt: | ?° |
Pole ecliptic latitude: | ? |
Pole ecliptic longitude: | ? |
Geometric albedo: | 0.10 |
Temperature: | ~157 K |
Spectral type: | C |
Absolute magnitude: | 8.27 |
147 Protogeneia is a big main belt asteroid. It has a dark surface and is probably made of carbonates.
It was found by Lipót Schulhof on July 10, 1875 and it was the only asteroid he found. It is named after Protogeneia, one of the daughters of King Erechtheus in Greek mythology.
There is one reported stellar occultation by Protogeneia, on May 28, 2002 from Texas.
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146 Lucina | 147 Protogeneia | 148 Gallia
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Near-Earth asteroids · Main belt · Jupiter Trojans · Neptune Trojans · Comets · Kuiper belt · Oort cloud |