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Cressida (moon)

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There is also an asteroid called 548 Kressida.
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Cressida
align="center"
Voyager 2 image of the Uranian moons Portia, Cressida, and Ophelia
Enlarge
Voyager 2 image of the Uranian moons Portia, Cressida, and Ophelia

Discovery
Discovered by Stephen P. Synnott / Voyager 2
Discovered in January 9, 1986
Orbital characteristics
Mean radius 61,767 km
Eccentricity 0.00023
Orbital period 0.46357 d
Inclination 0.038° (to Uranus' equator)
Is a satellite of Uranus
Physical characteristics
Mean diameter ~80 km (estimate)
Surface area ~20,000 km2 (estimate)
Volume ~260,000 km3 (estimate)
Mass kg (estimate)
Mean density ~1.3 g/cm3 (estimate)
Surface gravity ~0.013 m/s2 (estimate)
Escape velocity ~0.034 km/s (estimate)
Rotation period synchronous (assumed)
Axial tilt zero (assumed)
Albedo 0.07 (assumed)
Surface temp.
min mean max
~64 K (estimate)
Atmospheric pressure 0 kPa
Cressida (kres'-ə-də, IPA /ˈkrɛsədə/) is a moon of Uranus. It was named after the Trojan daughter of Calchas, a tragic heroine who appears in William Shakespeare's play Troilus and Cressida (as well as in tales by Geoffrey Chaucer and others). Other than its size and orbit, virtually nothing is known about it.

It was discovered from the images taken by Voyager 2 on 1986-01-09, and was given the temporary designation S/1986 U 3. It is also designated Uranus IX.

Uranus (satellites) [http://encycl.opentopia.com/ edit]
Cordelia | Ophelia | Bianca | Cressida | Desdemona | Juliet | Portia | Rosalind | Cupid
Belinda | Perdita | Puck | Mab | Miranda | Ariel | Umbriel | Titania | Oberon | Francisco
Caliban | Stephano | Trinculo | Sycorax | Margaret | Prospero | Setebos | Ferdinand
See also: | Rings of Uranus

 


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