Calypso

Discovery
Discovered by	Pascu, Seidelmann, Baum and Currie
Discovered in	March 13, 1980
Orbital characteristics
Semimajor axis	294,619 km
Eccentricity	0.000
Orbital period	1.887802 d [1]
Inclination	1.56° (to Saturn's equator)
Is a satellite of	Saturn
Physical characteristics
Mean diameter	19 km
Mass	? kg
Mean density	? g/cm3
Surface gravity	? m/s2
Rotation period	synchronous
Axial tilt	zero
Albedo	?
Surface temperature	min mean max  ? K  ? K  ? K
Atmosphere	none

Calypso (ka-lip'-soe, Greek Καλυψώ) is a moon of Saturn. It was discovered by Pascu, Seidelmann, Baum and Currie in 1980 from ground-based observations, and was designated 1980 S 25. In 1983 it was officially named after Calypso of Greek mythology. It is also designated as Saturn XIV. Calypso, Saturns moon. ... William Wakefield Cardinal Baum (born November 21, 1926 in Dallas, Texas) is the senior living Roman Catholic Cardinal from the United States and was the senior Cardinal Priest to participate in the 2005 Papal conclave. ... March 13 is the 72nd day of the year in the Gregorian calendar (73rd in leap years). ... 1980 is a leap year starting on Tuesday. ... 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 geometry, the semi-major axis (also semimajor axis) a applies to ellipses and hyperbolas. ... A kilometre (American spelling: kilometer) (symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and 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 140 kPa Hydrogen >93% Helium >5% Methane 0. ... For the geometric term, see diameter. ... 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. ... It has been suggested that Law of universal gravitation be merged into this article or section. ... 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. ... On a prograde planet like the Earth, the sidereal day is shorter than the solar day. ... In astronomy, synchronous rotation is a planetological term describing a body orbiting another, where the orbiting body takes as long to rotate on its axis as it does to make one orbit; and therefore always keeps the same hemisphere pointed at the body it is orbiting. ... 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. ... Atmosphere is the general name for a layer of gases that may surround a material body of sufficient mass. ... 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 140 kPa Hydrogen >93% Helium >5% Methane 0. ... William Wakefield Cardinal Baum (born November 21, 1926 in Dallas, Texas) is the senior living Roman Catholic Cardinal from the United States and was the senior Cardinal Priest to participate in the 2005 Papal conclave. ... 1980 is a leap year starting on Tuesday. ... 1983 is a common year starting on Saturday of the Gregorian calendar. ... In Greek mythology Kalypsō (Greek: Καλυψώ, I will conceal), or Calypso, was a sea nymph, daughter of Atlas, who delayed Odysseus on her dark and depressing island (Ogygia) for seven years. ... Greek mythology comprises the collected narratives of Greek gods, goddesses, heroes, and heroines, originally created and spread within an oral-poetic tradition. ...

Calypso is co-orbital with the moon Tethys, and resides in Tethys' trailing Lagrangian point (L₅). The moon Telesto resides in Tethys' leading Lagrangian point. Atmosphere none Tethys (tee-this or teth-is, Greek Τηθύς) is a moon of Saturn that was discovered by Giovanni Domenico Cassini in 1684. ... The Lagrangian points, (also Lagrange point, L-point, or libration point) are the five positions in space where a small object can be stationary with respect to two larger objects (such as a satellite with respect to the Earth and Moon). ... Atmosphere none Telesto (te-les-toe, Greek Τελεστώ) is a moon of Saturn. ...

Not to be confused with asteroid 53 Kalypso. An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... 53 Kalypso is a large and very dark main belt asteroid. ...

External links

• The Planetary Society: Calypso

[4]; [5] Atmospheric characteristics Pressure trace, signficant spatial variability [6] Water Vapor 65% [7] Hydrogen 20% [8] Other CO2, CO, N2 [9] Enceladus (en-sel-a-dus, Greek Εγκέλαδος) is a moon of Saturn discovered in 1789 by William Herschel. ... Atmosphere none Telesto (te-les-toe, Greek Τελεστώ) is a moon of Saturn. ... Atmosphere none Tethys (tee-this or teth-is, Greek Τηθύς) is a moon of Saturn that was discovered by Giovanni Domenico Cassini in 1684. ... Atmosphere none Polydeuces (pol-ee-dew-seez, Greek Πολυδεύκης) is a natural satellite of Saturn that was discovered on images taken on October 21, 2004 by the Cassini imaging team, led by Carolyn C. Porco et al, and given the temporary designation S/2004 S 5. ... Atmosphere none Dione (dye-oe-nee, Greek Διώνη) is a moon of Saturn discovered by Giovanni Cassini in 1684. ... Helene (hel-e-nee, Greek ‘Ελένη) is a moon of Saturn. ...