30 Urania
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A three-dimensional model of 30 Urania based on its light curve.
|
|
| Discovery[1] | |
|---|---|
| Discovered by | J. R. Hind |
| Discovery date | July 22, 1854 |
| Designations | |
| Pronunciation | /jʊˈreɪniə/ ew-RAY-nee-ə |
|
Named after
|
Urania |
| 1948 JK | |
| Main belt | |
| Orbital characteristics[2] | |
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 398.817 Gm (2.666 AU) |
| Perihelion | 309.338 Gm (2.068 AU) |
| 354.077 Gm (2.367 AU) | |
| Eccentricity | 0.126 |
| Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). | |
|
Average orbital speed
|
19.28 km/s |
| 196.549° | |
| Inclination | 2.097° |
| 307.820° | |
| 86.560° | |
| Physical characteristics | |
| Dimensions | 100.2 ± 6.8 km (IRAS)[2] 94.48 ± 5.37[3] km |
| Mass | (1.74 ± 0.49) × 1018[3] kg |
|
Mean density
|
3.92 ± 1.29[3] g/cm3 |
| 0.0280? m/s² | |
| 0.0529? km/s | |
| 0.57025 d (13.686 h)[4] | |
| Albedo | 0.1714 (geometric)[2] |
| Temperature | ~177 K |
|
Spectral type
|
S[2] |
| 9.36 (brightest) | |
| 7.53[2] | |
30 Urania is a large main-belt asteroid that was discovered by English astronomer John Russell Hind on July 22, 1854.[1] It was his last asteroid discovery. This object is named after Urania, the Greek Muse of astronomy. Initial orbital elements for 30 Urania were published by Wilhelm Günther, an assistant at Breslau Observatory.[5]
Based upon its spectrum, this is classified as a stony S-type asteroid.[6] During 2000, speckle interferometry measurements from the Telescopio Nazionale Galileo in the Canary Islands were used to measure the apparent size and shape of 30 Urania. This gave cross-sectional dimensions equivalent to an ellipse with a length of 111 km and a width of 89 km, for a ratio of 0.80.[7]
References
- ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 2.3 2.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found. See Table 1.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found. See Table 1.
- ↑ Lua error in package.lua at line 80: module 'strict' not found. See appendix A.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- JPL Ephemeris
- Keck image of Urania (Marchis 2011 November 11)
