48 Doris
| Discovery | |
|---|---|
| Discovered by | Hermann Mayer Salomon Goldschmidt |
| Discovery date | 19 September 1857 |
| Designations | |
| (48) Doris | |
| Pronunciation | /ˈdɔːrɪs/ |
Named after | Doris |
| Main belt | |
| Adjectives | Dorian /ˈdɔːriən/ |
| Orbital characteristics | |
| Epoch 31 December 2006 (JD 2454100.5) | |
| Aphelion | 500.093 Gm (3.343 AU) |
| Perihelion | 430.463 Gm (2.877 AU) |
| 465.278 Gm (3.110 AU) | |
| Eccentricity | 0.075 |
| 2003.453 d (5.49 a) | |
| 336.191° | |
| Inclination | 6.554° |
| 183.754° | |
| 257.583° | |
| Physical characteristics | |
| Dimensions | 278 km × 142 km |
| 215±3 km 221.8±7.5 km (IRAS) | |
| Flattening | 0.28 |
| Mass | (6.9±2.9)×1018 kg (12.3±6.0)×1018 kg |
Mean density | 1.32±0.55 g/cm3 2.12±1.07 g/cm3 |
| 11.89 h | |
| 0.066 0.062 | |
| C | |
| 7.14 | |
48 Doris is one of the largest main belt asteroids. It was discovered on 19 September 1857 by Hermann Goldschmidt from his balcony in Paris.
To find a name for the object, Jacques Babinet of the Academy of Sciences created a shortlist and asked the geologist Élie de Beaumont to make the selection. De Beaumont chose Doris, after an Oceanid in Greek mythology. Since Doris was discovered on the same night as 49 Pales, de Beaumont suggested naming the two "The Twins".