Discovery | |
---|---|
Discovered by | Bradford A. Smith / Voyager 2 |
Discovery date | January 23, 1986 |
Designations | |
Designation | Uranus VIII |
Pronunciation | /biˈæŋkə/[1] |
Adjectives | Biancan[2] |
Orbital characteristics | |
Mean orbit radius | 59,165.550 ± 0.045 km[3] |
Eccentricity | 0.00092 ± 0.000118[3] |
Orbital period | 0.434578986 ± 0.000000022 d[3] |
Inclination | 0.19308 ± 0.054° (to Uranus' equator)[3] |
Satellite of | Uranus |
Physical characteristics | |
Dimensions | 64 × 46 × 46 km[4] |
Mean radius | 25.7 ± 2 km[4][5][6] |
Surface area | ~8300 km2[lower-alpha 1] |
Volume | ~71,000 km3[lower-alpha 1] |
Mass | ~9.2×1016 kg[lower-alpha 1] |
Mean density | ~1.3 g/cm3 (assumed)[5] |
~0.0086 m/s2[lower-alpha 1] | |
~0.022 km/s[lower-alpha 1] | |
Rotation period | synchronous[4] |
Axial tilt | zero[4] |
Albedo | |
Physics | ~64 K[lower-alpha 1] |
Bianca 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.[8] It was named after the sister of Katherine in Shakespeare's play The Taming of the Shrew. It is also designated Uranus VIII.[9]
Bianca belongs to the Portia group of satellites, which also includes Cressida, Desdemona, Juliet, Portia, Rosalind, Cupid, Belinda and Perdita.[7] These satellites have similar orbits and photometric properties.[7] Other than its orbit,[3] radius of 27 km,[4] and geometric albedo of 0.08[7] virtually nothing is known about it.
In 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.[4] Its surface is grey in color.[4]
Explanatory notes
Citations
Original source: https://en.wikipedia.org/wiki/Bianca (moon).
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