![]() Cordelia (Imaged 24 January 1986) | |
Discovery [1] | |
---|---|
Discovered by | Richard J. Terrile / Voyager 2 |
Discovery date | January 20, 1986 |
Designations | |
Designation | Uranus VI |
Pronunciation | /kɔːrˈdiːliə/ [2] |
Adjectives | Cordelian [3] |
Orbital characteristics [4] | |
49751.722±0.149 km | |
Eccentricity | 0.00026±0.000096 |
0.33503384±0.00000058 d | |
Inclination | 0.08479°±0.031° (to Uranus' equator) |
Satellite of | Uranus |
Group | ring shepherd |
Physical characteristics | |
Dimensions | 50 × 36 × 36 km [5] [note 1] |
~5200 km2 [a] | |
Volume | 33900±34.9% km3 [6] |
Mass | (6.08±0.57)×1016 kg [6] |
Mean
density | 1.79+0.97 −0.49 g/cm3 [6] |
~0.006–0.013 m/s2 [a] | |
~0.018–0.021 km/s [a] | |
synchronous [5] | |
zero [5] | |
Albedo | 0.06±0.01
[7] 0.07 [8] |
Temperature | ~65 K [a] |
|
Cordelia is the innermost known moon of Uranus. It was discovered from the images taken by Voyager 2 on January 20, 1986, and was given the temporary designation S/1986 U 7. [1] It was not detected again until the Hubble Space Telescope observed it in 1997. [7] [9] Cordelia takes its name from the youngest daughter of Lear in William Shakespeare's King Lear. It is also designated Uranus VI. [10]
Other than its orbit, [4] size of 50 × 36 km, [5] and geometric albedo of 0.06, [7] virtually nothing is known about it. In the Voyager 2 images, Cordelia appears as an elongated object with its major axis pointing towards Uranus. The ratio of axes of Cordelia's prolate spheroid is 0.7±0.2. [5]
Cordelia acts as the inner shepherd satellite for Uranus's ε ring. [11] Cordelia's orbit is within Uranus's synchronous orbit radius, and is therefore slowly decaying due to tidal deceleration. [5]
Cordelia is very close to a 5:3 orbital resonance with Rosalind. [12]
![]() Cordelia (Imaged 24 January 1986) | |
Discovery [1] | |
---|---|
Discovered by | Richard J. Terrile / Voyager 2 |
Discovery date | January 20, 1986 |
Designations | |
Designation | Uranus VI |
Pronunciation | /kɔːrˈdiːliə/ [2] |
Adjectives | Cordelian [3] |
Orbital characteristics [4] | |
49751.722±0.149 km | |
Eccentricity | 0.00026±0.000096 |
0.33503384±0.00000058 d | |
Inclination | 0.08479°±0.031° (to Uranus' equator) |
Satellite of | Uranus |
Group | ring shepherd |
Physical characteristics | |
Dimensions | 50 × 36 × 36 km [5] [note 1] |
~5200 km2 [a] | |
Volume | 33900±34.9% km3 [6] |
Mass | (6.08±0.57)×1016 kg [6] |
Mean
density | 1.79+0.97 −0.49 g/cm3 [6] |
~0.006–0.013 m/s2 [a] | |
~0.018–0.021 km/s [a] | |
synchronous [5] | |
zero [5] | |
Albedo | 0.06±0.01
[7] 0.07 [8] |
Temperature | ~65 K [a] |
|
Cordelia is the innermost known moon of Uranus. It was discovered from the images taken by Voyager 2 on January 20, 1986, and was given the temporary designation S/1986 U 7. [1] It was not detected again until the Hubble Space Telescope observed it in 1997. [7] [9] Cordelia takes its name from the youngest daughter of Lear in William Shakespeare's King Lear. It is also designated Uranus VI. [10]
Other than its orbit, [4] size of 50 × 36 km, [5] and geometric albedo of 0.06, [7] virtually nothing is known about it. In the Voyager 2 images, Cordelia appears as an elongated object with its major axis pointing towards Uranus. The ratio of axes of Cordelia's prolate spheroid is 0.7±0.2. [5]
Cordelia acts as the inner shepherd satellite for Uranus's ε ring. [11] Cordelia's orbit is within Uranus's synchronous orbit radius, and is therefore slowly decaying due to tidal deceleration. [5]
Cordelia is very close to a 5:3 orbital resonance with Rosalind. [12]