.png) A three-dimensional model of 390 Alma based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Guillaume Bigourdan |
| Discovery date | 24 March 1894 |
| Designations | |
| (390) Alma | |
Named after | Alma River |
| 1894 BC; 1930 QW; 1950 BV; 1950 CH; 1953 YB; 1963 DF | |
| Main belt (Eunomia family) | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 122.02 yr (44568 d) |
| Aphelion | 3.00211 AU (449.109 Gm) |
| Perihelion | 2.29906 AU (343.934 Gm) |
| 2.65059 AU (396.523 Gm) | |
| Eccentricity | 0.13262 |
| 4.32yr (1576.2d) | |
| 136.953° | |
| 0° 13m 42.229s / day | |
| Inclination | 12.1645° |
| 305.223° | |
| 190.194° | |
| Physical characteristics | |
| Dimensions | 23.74±1.4 km[1] 24 km[2] |
Meandensity | ~2.7 g/cm3[3] |
| 3.74 h (0.156 d)[1] 0.156 d[4] | |
| 0.2190±0.029 | |
| S-type asteroid | |
| 10.39 | |
390 Alma is anasteroid from the intermediateasteroid belt, approximately 24 kilometers in diameter. It wasGuillaume Bigourdan's only asteroid discovery. He discovered it on 24 March 1894 in Paris.[1]
_mathilde.jpg) | This article about an S-type asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |