Rosalind (moon)
- There is also an asteroid called 900 Rosalinde.
The Hubble Space Telescope captured tiny Rosalind orbiting Uranus in 1997
|
|
Discovery | |
---|---|
Discovered by | Stephen P. Synnott / Voyager 2 |
Discovery date | January 13, 1986 |
Orbital characteristics | |
Mean orbit radius
|
69,926.795 ± 0.053 km[1] |
Eccentricity | 0.00011 ± 0.000103[1] |
0.558459529 ± 0.000000019 d[1] | |
Inclination | 0.27876 ± 0.045° (to Uranus' equator)[1] |
Satellite of | Uranus |
Physical characteristics | |
Dimensions | 72 × 72 × 72 km[2] |
Mean radius
|
36 ± 6 km[2][3][4] |
~16,000 km²[lower-alpha 1] | |
Volume | ~200,000 km³[lower-alpha 1] |
Mass | ~2.5×1017 kg[lower-alpha 1] |
Mean density
|
~1.3 g/cm³ (assumed)[3] |
~0.012 m/s²[lower-alpha 1] | |
~0.031 km/s[lower-alpha 1] | |
synchronous[2] | |
zero[2] | |
Albedo | 0.08 ± 0.01[5] |
Temperature | ~64 K[lower-alpha 1] |
Rosalind (/ˈrɒzəlᵻnd/ ROZ-ə-lind) is an inner satellite of Uranus. It was discovered from the images taken by Voyager 2 on 13 January 1986, and was given the temporary designation S/1986 U 4.[6] It was named after the daughter of the banished Duke in William Shakespeare's play As You Like It. It is also designated Uranus XIII.[7]
Rosalind belongs to Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Belinda and Perdita.[5] These satellites have similar orbits and photometric properties.[5] Other than its orbit,[1] radius of 36 km[2] and geometric albedo of 0.08[5] virtually nothing is known about Rosalind.
In the Voyager 2 images Rosalind appears as an almost spherical object. The ratio of axes of Rosalind's prolate spheroid is 0.8-1.0.[2] Its surface is grey in color.[2]
Rosalind is very close to a 3:5 orbital resonance with Cordelia.[8]
See also
References
Explanatory notes
Citations
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