Telesto

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Discovery
Discovered by	Smith, Reitsema, Larson and Fountain
Discovered in	April 8, 1980
Orbital characteristics
Semimajor axis	294,619 km
Eccentricity	0.000
Orbital period	1.887802 d [1]
Inclination	1.19° (to Saturn's equator)
Is a satellite of	Saturn
Physical characteristics
Diameter	24 km (29 × 22 × 20 km) [1]
Mass	unknown
Mean density	unknown
Surface gravity	unknown
Rotation period	synchronous
Axial tilt	zero
Albedo	unknown
Surface temperature	min mean max  ? K  ? K  ? K
Atmosphere	none

Telesto IPA: [təˈlɛstoʊ], Greek Τελεστώ) is a moon of Saturn. It was discovered by Smith, Reitsema, Larson and Fountain in 1980 from ground-based observations, and was provisionally designated S/1980 S 13. In 1983 it was officially named after Telesto of Greek mythology. It is also designated as Saturn XIII. Image File history File links Telesto_cassini_closeup. ... Harold J. Reitsema is an astronomer who discovered Larissa, which is the fifth of Neptunes known moons. ... April 8 is the 98th day of the year in the Gregorian calendar (99th in leap years). ... 1980 (MCMLXXX) was 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 kilometer (Commonwealth spelling: kilometre), symbol: km is a unit of length in the metric system equal to 1,000 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 in general is the angle between a reference plane and another plane or axis of direction. ... Moons of the Solar System scaled to Earths Moon A natural satellite is an object that orbits a planet or other body larger than itself and which is not man-made. ... Atmospheric characteristics Atmospheric pressure 140 kPa Hydrogen >93% Helium >5% Methane 0. ... Diameter is an AAA (authentication, authorization and accounting) protocol for applications such as network access or IP mobility. ... Unsolved problems in physics: What causes anything to have mass? Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... Density (symbol: ρ - Greek: rho) is a measure of mass per volume. ... Gravity is a force of attraction that acts between bodies that have mass. ... 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. ... Albedo is a ratio of scattered to incident electromagnetic radiation power. ... [[Image:Translational motion. ... The Kelvin scale is a thermodynamic (absolute) temperature scale where absolute zero—the lowest possible temperature where nothing could be colder and no heat energy remains in a substance—is defined as zero kelvin (0 K). ... Atmosphere is the general name for a layer of gases that may surround a material body of sufficient mass. ... For information on how to read IPA transcriptions of English words see here. ... Moons of the Solar System scaled to Earths Moon A natural satellite is an object that orbits a planet or other body larger than itself and which is not man-made. ... Atmospheric characteristics Atmospheric pressure 140 kPa Hydrogen >93% Helium >5% Methane 0. ... Harold J. Reitsema is an astronomer who discovered Larissa, which is the fifth of Neptunes known moons. ... 1980 (MCMLXXX) was a leap year starting on Tuesday. ... 1983 (MCMLXXXIII) was a common year starting on Saturday of the Gregorian calendar. ... In Greek mythology, Telesto (alternate: Telestho, both meaning success) was a daughter of Oceanus and Tethys. ... The Oricoli bust of Zeus, King of the Gods, in the collection of the Vatican Museum. ...

Telesto is co-orbital with Tethys, residing in Tethys' leading Lagrangian point (L₄). The moon Calypso resides in Tethys' trailing Lagrangian point (L₅). Atmosphere none Tethys (tee-thÉ™s or teth-É™s, IPA , Greek Τηθύς) is a moon of Saturn that was discovered by Giovanni Domenico Cassini in 1684. ... A contour plot of the effective potential of a two-body system (the Sun and Earth here), showing the five Lagrange points. ... Atmosphere none Calypso (ka-lip-soe, Greek Καλυψώ) is a moon of Saturn. ...

The Cassini probe performed a distant flyby of Telesto on October 11, 2005. The resulting images show that its surface is surprisingly smooth, devoid of small impact craters. This is an artists concept of Cassini during the Saturn Orbit Insertion (SOI) maneuver, just after the main engine has begun firing. ... October 11 is the 284th day of the year (285th in leap years) in the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... Tycho crater on Earths moon. ...

External links

• The Planetary Society: Telesto

References

1. ^ C.C. Porco et al. (2006). "Physical characteristics and possible accretionary origins for Saturn's small satellites". Bulletin of the American Astronomical Society 37: 768.

[5] Atmospheric characteristics Pressure trace, significant spatial variability [6], [7] Water vapour 91% [8] Carbon dioxide 3. ... Atmosphere none Tethys (tee-thÉ™s or teth-É™s, IPA , Greek Τηθύς) is a moon of Saturn that was discovered by Giovanni Domenico Cassini in 1684. ... Atmosphere none Calypso (ka-lip-soe, Greek Καλυψώ) is a moon of Saturn. ... Atmosphere none Polydeuces (pol-ee-dew-seez, IPA , Greek Πολυδεύκης) is a natural satellite of Saturn that was discovered in 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. ...

edit Saturn's natural satellites
Pan · Daphnis · Atlas · Prometheus · S/2004 S 6 · S/2004 S 4 · S/2004 S 3 · Pandora · Epimetheus and Janus Mimas · Methone · Pallene · Enceladus · Telesto, Tethys, and Calypso · Helene, Dione, and Polydeuces · Rhea · Titan · Hyperion · Iapetus Kiviuq · Ijiraq · Phoebe · Paaliaq · Skathi · Albiorix · S/2004 S 11 · Erriapo · S/2006 S 8 · Siarnaq · S/2004 S 13 · S/2006 S 4 · Tarvos S/2004 S 19 · Mundilfari · S/2006 S 6 · S/2006 S 1 · S/2004 S 17 · Narvi · S/2004 S 15 · S/2004 S 10 · Suttungr · S/2004 S 12 · S/2004 S 18 S/2004 S 9 · S/2004 S 14 · S/2004 S 7 · Thrymr · S/2006 S 3 · S/2006 S 7 · S/2006 S 2 · S/2004 S 16 · S/2006 S 2 · Ymir · S/2006 S 5 · S/2004 S 8
See also: Pronunciation key | Rings of Saturn | Cassini-Huygens | Themis