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Cressida is a small moon that orbits the planet Uranus. It was discovered in 1986 and is one of several inner moons that help scientists understand the Uranian system.
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Cressida /ˈkrɛsɪdə/ is an inner satellite of Uranus. It was discovered from the images taken by Voyager 2 on 9 January 1986, and was given the temporary designation S/1986 U 3. It was named after Cressida, 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). It is also designated Uranus IX.
Cressida belongs to the Portia group of satellites, which includes Bianca, Desdemona, Juliet, Portia, Rosalind, Cupid, Belinda, and Perdita. These satellites have similar orbits and photometric properties. Other than its orbit, size of 92 km × 74 km (57 mi × 46 mi), and geometric albedo of 0.08, little is known about it.