 A three-dimensional model of 94 Aurora based on its light curve on the top with the image of the asteroid on the bottom. | |
| Discovery | |
|---|---|
| Discovered by | James Craig Watson |
| Discovery date | 6 September 1867 |
| Designations | |
| (94) Aurora | |
| Pronunciation | /əˈrɔːrə,ɒ-/[1] |
Named after | Aurōra |
| Main belt | |
| Adjectives | Aurorean/ɔːˈrɔːriən/[2] |
| Orbital characteristics[3] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 143.72 yr (52494 d) |
| Aphelion | 3.45175 AU (516.374 Gm) |
| Perihelion | 2.86831 AU (429.093 Gm) |
| 3.16003 AU (472.734 Gm) | |
| Eccentricity | 0.092315 |
| 5.62yr (2051.8d) | |
Averageorbital speed | 16.73 km/s |
| 132.718° | |
| 0° 10m 31.638s / day | |
| Inclination | 7.97343° |
| 2.59859° | |
| 60.8260° | |
| Physical characteristics | |
| Dimensions | 225 × 173 km[4] |
| 204.89±3.6 km(IRAS)[3] | |
| Mass | (6.606 ± 2.584/2.173)×1018 kg[5] |
Meandensity | 1.676 ± 0.655/0.551 g/cm3[5][a] |
Equatorialsurface gravity | 0.042 m/s² |
Equatorialescape velocity | 0.0928 km/s |
| 7.22 h (0.301 d)[3] | |
| 0.0395±0.001[3] 0.0395[6] | |
| Temperature | ~157K |
| C[3] | |
| 7.74[3] | |
94 Aurora is one of the largestmain-beltasteroids. With analbedo of only 0.04, it is darker thansoot, and has a primitive composition consisting of carbonaceous material. It was discovered byJ. C. Watson on September 6, 1867, inAnn Arbor, and named afterAurora, theRoman goddess of thedawn.
This asteroid is orbiting theSun with aperiod of 5.62 years and a relatively loweccentricity of 0.092. It is spinning with arotation period of 7.22 hours. Observations of anoccultation using ninechords indicate anoval outline of 225×173 km.[4] The asteroid'spole of rotation lies just 4–16° away from theplane of the ecliptic.[7]
_mathilde.jpg) | This article about a C-type asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
