103 Hera
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| Discovery | |
|---|---|
| Discovered by: | James Craig Watson |
| Discovery date: | September 7, 1868 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 436.522 Gm (2.918 AU) |
| Perihelion distance: | 372.135 Gm (2.488 AU) |
| Semi-major axis: | 404.328 Gm (2.703 AU) |
| Eccentricity: | 0.080 |
| Orbital period: | 1622.975 d (4.44 a) |
| Avg. orbital speed: | 18.09 km/s |
| Mean anomaly: | 74.835° |
| Inclination: | 5.421° |
| Longitude of ascending node: | 136.276° |
| Argument of perihelion: | 190.160° |
| Physical characteristics | |
| Dimensions: | 91.2 km |
| Mass: | 7.9×1017 kg |
| Mean density: | ? g/cm³ |
| Equatorial surface gravity: | 0.0255 m/s² |
| Escape velocity: | 0.0482 km/s |
| Rotation period: | ? d |
| Albedo: | ? |
| Temperature: | ~169 K |
| Spectral type: | S |
| Absolute magnitude: | 7.66 |
103 Hera is a large main belt asteroid. It has a silicate surface composition. It was discovered by J. C. Watson on September 7, 1868 and named after Hera, queen of the gods in Greek mythology.
| Minor planets | ||
|---|---|---|
| Previous minor planet | 103 Hera | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
