878 Mildred
| Discovery | |
|---|---|
| Discovered by | S. B. Nicholson H. Shapley |
| Discovery site | Mount Wilson Obs. |
| Discovery date | 6 September 1916 |
| Designations | |
| (878) Mildred | |
Named after | Mildred Shapley Matthews |
| 1916 f, 1985 VG6, 1991 GZ8 | |
| main-belt Nysa | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 99.57 yr (36368 days) |
| Aphelion | 2.8953 AU (433.13 Gm) |
| Perihelion | 1.8286 AU (273.55 Gm) |
| 2.3619 AU (353.34 Gm) | |
| Eccentricity | 0.22580 |
| 3.63 yr (1325.9 d) | |
| 198.89° | |
| 0° 16m 17.472s / day | |
| Inclination | 2.0648° |
| 172.83° | |
| 190.14° | |
| Physical characteristics | |
| Dimensions | ~4 km |
| 2.660 h (0.1108 d) | |
| S | |
| 14.7 | |
878 Mildred is a minor planet in the main belt orbiting the Sun. It is the lowest numbered, and thus the namesake, of the Mildred family of asteroids, a subgroup of the Nysa family. The Mildred subgroup, and by extension 878 Mildred itself, is thought to have been formed by a recent fragmentation event from a larger asteroid.