| 词条 | Bianca (moon) |
| 释义 |
There is also an asteroid called 218 Bianca.{{Infobox planet | name = Bianca | image = Biancamoon.png | discoverer = Bradford A. Smith / Voyager 2 | discovered = January 23, 1986 | mean_orbit_radius = 59,165.550 ± 0.045 km | eccentricity = 0.00092 ± 0.000118 | period = 0.434578986 ± 0.000000022 d | inclination = 0.19308 ± 0.054° (to Uranus' equator) | satellite_of = Uranus | dimensions = 64 × 46 × 46 km[5] | mean_radius = 25.7 ± 2 km[5][7][8] | surface_area = ~8300 km²{{efn|name=calculated}} | volume = ~71,000 km³{{efn|name=calculated}} | mass = ~9.2{{e|16}} kg{{efn|name=calculated}} | density = ~1.3 g/cm³ (assumed)[7] | surface_grav = ~0.0086 m/s²{{efn|name=calculated}} | escape_velocity = ~0.022 km/s{{efn|name=calculated}} | rotation = synchronous[5] | axial_tilt = zero[5] | albedo =
| single_temperature = ~64 K{{efn|name=calculated}} }}Bianca ({{IPAc-en|b|i|ˈ|ɑː|ŋ|k|ə}} {{respell|bee|AHNG|kə}}) is an inner satellite of Uranus. It was discovered from the images taken by Voyager 2 on January 23, 1986, and was given the temporary designation S/1986 U 9.[15] It was named after the sister of Katherine in Shakespeare's play The Taming of the Shrew. It is also designated Uranus VIII.[16] Bianca belongs to Portia Group of satellites, which also includes Cressida, Desdemona, Juliet, Portia, Rosalind, Cupid, Belinda and Perdita.[12] These satellites have similar orbits and photometric properties.[12] Other than its orbit, radius of 27 km,[5] and geometric albedo of 0.08[12] virtually nothing is known about it. At the Voyager 2 images Bianca appears as an elongated object, the major axis pointing towards Uranus. The ratio of axes of the Bianca's prolate spheroid is 0.7 ± 0.2.[5] Its surface is grey in color.[5] See also
ReferencesExplanatory notes{{notes| notes ={{efn | name = calculated | Calculated on the basis of other parameters. }} }}Citations 1. ^1 2 3 4 5 6 7 {{cite journal| doi = 10.1006/icar.2001.6597| last = Karkoschka| first = Erich| authorlink = Erich Karkoschka| year = 2001| title = Voyager's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites| journal = Icarus| volume = 151| issue = 1| pages = 69–77| bibcode = 2001Icar..151...69K| ref = {{sfnRef|Karkoschka, Voyager|2001}}}} [1][2][3][4][5][6]2. ^1 2 3 {{cite web| publisher = JPL (Solar System Dynamics)| title = Planetary Satellite Physical Parameters| date = 24 October 2008| url = http://ssd.jpl.nasa.gov/?sat_phys_par| accessdate = 12 December 2008| archiveurl= https://web.archive.org/web/20090117082950/http://ssd.jpl.nasa.gov/?sat_phys_par| archivedate= 17 January 2009 | deadurl= no}} 3. ^1 2 {{cite web| last = Williams| first = Dr. David R.| date = 23 November 2007| title = Uranian Satellite Fact Sheet| publisher = NASA (National Space Science Data Center)| url = http://nssdc.gsfc.nasa.gov/planetary/factsheet/uraniansatfact.html| accessdate = 12 December 2008}} 4. ^1 2 3 4 {{cite journal| doi = 10.1006/icar.2001.6596| last = Karkoschka| first = Erich| authorlink = Erich Karkoschka| year = 2001| title = Comprehensive Photometry of the Rings and 16 Satellites of Uranus with the Hubble Space Telescope| journal = Icarus| volume = 151| issue = 1| pages = 51–68| bibcode = 2001Icar..151...51K| ref = {{sfnRef|Karkoschka, Hubble|2001}}}} 5. ^1 {{cite journal| last = Smith| first = B. A.| title = Satellites and Rings of Uranus| journal = IAU Circular| volume = 4168| date = 1986-01-27| url = http://www.cbat.eps.harvard.edu/iauc/04100/04168.html#Item1| accessdate = 2011-10-31}} 6. ^1 {{cite web| title = Planet and Satellite Names and Discoverers| work = Gazetteer of Planetary Nomenclature| publisher = USGS Astrogeology| date = July 21, 2006| url = http://planetarynames.wr.usgs.gov/Page/Planets| accessdate = 6 August 2006}} }} External links
2 : Moons of Uranus|Astronomical objects discovered in 1986 |
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