94 Aurora
From Infogalactic: the planetary knowledge core
- Not to be confused with Aurora borealis.
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A three-dimensional model of 94 Aurora based on its light curve.
|
|
| Discovery | |
|---|---|
| Discovered by | James Craig Watson |
| Discovery date | September 6, 1867 |
| Designations | |
| Pronunciation | /əˈrɔərə/ |
|
Named after
|
Aurōra |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 513.851 Gm (3.435 AU) |
| Perihelion | 431.319 Gm (2.883 AU) |
| 472.585 Gm (3.159 AU) | |
| Eccentricity | 0.087 |
| 2050.831 d (5.61 a) | |
|
Average orbital speed
|
16.73 km/s |
| 239.694° | |
| Inclination | 7.966° |
| 2.709° | |
| 59.814° | |
| Physical characteristics | |
| Dimensions | 225×173km[2] 204.9 ± 3.6 km (IRAS)[1] |
| Mass | (6.23 ± 3.64) × 1018[3] kg |
|
Mean density
|
1.83 ± 1.10[3] g/cm3 |
| 0.0573 m/s² | |
| 0.1083 km/s | |
| 7.22 h[1] | |
| Albedo | 0.0395[1][4] |
| Temperature | ~157 K |
|
Spectral type
|
C[1] |
| 7.57[1] | |
94 Aurora is one of the largest main-belt asteroids. With an albedo of only 0.04, it is darker than soot, and has a primitive compositions consisting of carbonaecous material. It was discovered by J. C. Watson on September 6, 1867, in Ann Arbor, and named after Aurora, the Roman goddess of the dawn.
Observations of an occultation using nine chords indicate an oval outline of 225×173 km.[2]
References
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