Rosalind (moon)
Moon of Uranus
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Rosalind 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.[10] 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.[11]
- 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 |
| Designations | |
Designation | Uranus XIII |
| Pronunciation | /ˈrɒzələnd/[1] |
| Adjectives | Rosalindian /rɒzəˈlɪndiən/[2] |
| Orbital characteristics[3] | |
| 69,926.795 ± 0.053 km | |
| Eccentricity | 0.00011 ± 0.000103 |
| 0.558459529 ± 0.000000019 d | |
| Inclination | 0.27876 ± 0.045° (to Uranus's equator) |
| Satellite of | Uranus |
| Physical characteristics | |
| Dimensions | 72 × 72 × 72 km[4][note 1] |
| 36 ± 6 km[5][6] | |
| ~16 000 km2[a] | |
| Volume | 195 400 km3 ± 31.4%[7] |
| Mass | (1.759±0.552)×1017 kg[7] |
Mean density | 0.5–1.2 g/cm3[8] 0.9 g/cm3 (assumed)[7] |
| synchronous[4] | |
| zero[4] | |
| Albedo | 0.08 ± 0.01[9] |
| |
Rosalind belongs to Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Belinda, and Perdita.[9] These satellites have similar orbits and photometric properties.[9] Other than its orbit,[3] diameter of 72 km (45 mi),[4] and geometric albedo of 0.08,[9] little is known about Rosalind.
In Voyager 2 imagery, Rosalind appears as an almost spherical object. The ratio of axes of Rosalind's prolate spheroid is 0.8–1.0.[4] Its surface is grey in color.[4]
Rosalind is very close to a 3:5 orbital resonance with Cordelia.[12]
See also
Notes
- Calculated on the basis of other parameters.