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| Orbital characteristics [ftp://ftp.lowell.edu/pub/elgb/astorb.html 1] | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.704 AU |
| Perihelion distance | 2.490 AU |
| Aphelion distance | 2.918 AU |
| Orbital period | 4.45 years |
| Inclination | 5.42° |
| Eccentricity | 0.079 |
| Physical characteristics [ftp://ftp.lowell.edu/pub/elgb/astorb.html 1] | |
| Diameter | 91.2 km |
| Rotation period | 23.74 hours |
| Spectral class | S |
| Abs. magnitude | 7.66 |
| Albedo | 0.183 |
| History | |
| Discoverer | J. C. Watson, 1868 |
103 Hera is a large main belt asteroid. It has probably a composition of metallic nickel-iron and silicates.
It was discovered by J. C. Watson on September 7, 1868 and named after Hera, queen of the gods in Greek mythology.
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