Cressida (kres'-i-da) 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. Stephen P. Synnott is a Voyager scientist who discovered several moons of Jupiter, Saturn, Uranus, and Neptune. ... The Voyager 2 spacecraft was launched in 1977. ... January 9 is the 9th day of the year in the Gregorian calendar. ... 1986 (MCMLXXXVI) is a common year starting on Wednesday of the Gregorian calendar. ... In physics, an orbit is the path that an object makes, around another object, whilst under the influence of a source of centripetal force, such as gravity. ... In classical geometry, a radius of a circle or sphere is any line segment with one endpoint on the circle (i. ... A kilometre (American spelling: kilometer), symbol: km is a unit of length in the metric system equal to 1000 metres (from the Greek words χίλια (khilia) = thousand and μέτρο (metro) = count/measure). ... In astrodynamics, under standard assumptions any orbit must be of conic section shape. ... The orbital period is the time it takes a planet (or another object) to make one full orbit. ... Inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit and is the angular distance of the orbital plane from the plane of the reference (usually planets equator or the ecliptic), stated in degrees. ... Moons of solar system scaled to Earths Moon The common noun moon (not capitalized) is used to mean any natural satellite of the other planets. ... Atmospheric characteristics Atmospheric pressure 120 kPa Hydrogen 83% Helium 15% Methane 1. ... For the geometric term, see diameter. ... Area is a physical quantity expressing the size of a part of a surface. ... Square kilometre (US spelling: Square kilometer), symbol km², is an SI unit of surface area. ... Volume, also called capacity, is a quantification of how much space an object occupies. ... A cubic kilometre (symbol km³) is an SI derived unit of volume. ... Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. ... The international prototype, made of platinum-iridium, which is kept at the BIPM under conditions specified by the 1st CGPM in 1889. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... ... Acceleration is the time rate of change of velocity, and at any point on a v-t graph, it is given by the gradient of the tangent to that point In physics, acceleration (symbol: a) is defined as the rate of change (or time derivative) of velocity. ... In physics, for a given gravitational field and a given position, the escape velocity is the minimum speed an object without propulsion, at that position, needs to have to move away indefinitely from the source of the field, as opposed to falling back or staying in an orbit within a... On a prograde planet like the Earth, the sidereal day is shorter than the solar day. ... Axial tilt is an astronomical term regarding the inclination angle of a planets rotational axis in relation to its orbital plane. ... The albedo is a measure of reflectivity of a surface or body. ... Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ... diurnal (daily) rhythm of air pressure in northern Germany (black curve is air pressure) Atmospheric pressure is the pressure above any area in the Earths atmosphere caused by the weight of air. ... The pascal (symbol Pa) is the SI unit of pressure. ... Moons of solar system scaled to Earths Moon The common noun moon (not capitalized) is used to mean any natural satellite of the other planets. ... Atmospheric characteristics Atmospheric pressure 120 kPa Hydrogen 83% Helium 15% Methane 1. ... Walls of the excavated city of Troy (Turkey) Troy (Greek Τροία Troia also Ἰλιον; Latin: Troia, Ilium) is a legendary city, scene of the Trojan War, part of which is described in Homers Iliad, an epic poem in Ancient Greek, composed in the 8th or 7th century BC, but containing older... Wikipedia does not yet have an article with this exact name. ... The History of Troilus and Cressida is a play by William Shakespeare, believed to have been written around 1602, shortly after the completion of Hamlet. ... Chaucer: Illustration from Cassells History of England, circa 1902. ...

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. The Voyager 2 spacecraft was launched in 1977. ... 1986 (MCMLXXXVI) is a common year starting on Wednesday of the Gregorian calendar. ... January 9 is the 9th day of the year in the Gregorian calendar. ...