Callisto

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Callisto

(kəlĭs`tō), in astronomy, one of the 39 known moons, or natural satellites, of JupiterJupiter
, in astronomy, 5th planet from the sun and largest planet of the solar system. Astronomical and Physical Characteristics

Jupiter's orbit lies beyond the asteroid belt at a mean distance of 483.6 million mi (778.
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.

Callisto

(kəlĭs`tō), in Greek mythology, an attendant of Artemis. Because she forsook her chastity and bore a son, Arcas, to Zeus, she was transformed into a bear by Artemis. According to another legend she was changed into a bear by the jealous Hera. Arcas, while out hunting, was about to kill her when Zeus intervened and transferred them both to the heavens, Callisto becoming the constellation Ursa Major [great bear] and Arcas becoming Arcturus.

Callisto

(kă-liss -toh) The second largest of the four giant Galilean satellites of Jupiter, with a radius of 2400 km and a density of 1.86 g cm–3. It is the faintest of the Galileans, having an albedo of 0.2. It is the most heavily cratered object so far discovered in the Solar System, exhibiting a number of ray systems, i.e. craters from which bright streaks radiate. Some major systems of concentric ring mountains are prominent, particularly in the neighborhood of the huge Valhalla Basin, which is located slightly north of the equator. The basin is a bright circular region 600 km in diameter and is surrounded by concentric rings 50–200 km apart; the outermost ring is 3000 km across. This basin is comparable with Orientale Basin on the Moon, the Caloris Basin on Mercury, and Hellas Planitia on Mars. A second huge basin on Callisto, Asgard Basin, has a total diameter of 1600 km. Prior to the Galileo mission, Callisto was thought to have a thick crust of ice and rock extending to a depth of 200 to 300 km, beneath which there was believed to be a mantle of 1000 km of convecting water or soft ice. But preliminary analysis of the Galileo data has suggested that Callisto's internal structure is relatively undifferentiated, although the proportion of rock to ice may increase toward the center. Callisto, the outermost of the Galilean satellites, is beyond the major charged particle environment of Jupiter. It appears to be geologically inactive, its surface cratering being due to innumerable impacts during the early history of the Solar System. Scientists using the Hubble Space Telescope have detected a tenuous oxygen atmosphere on Callisto, probably caused by the interaction between charged solar particles and water molecules in the satellite's icy crust. See also Jupiter's satellites; Table 2, backmatter.

Callisto

[kə′lis‚tō]
(astronomy)
A satellite of Jupiter orbiting at a mean distance of 1,884,000 kilometers. Also known as Jupiter IV.

Callisto

nymph that Zeus transformed into a bear. [Gk. Myth.: Walsh Classical, 28]
References in periodicals archive ?
The Plantronics Calisto Pro features a compact landline handset and multi-function Bluetooth headset nested in a clean, elegant charging base.
Fraudulent activity is believed to have spilled into Latin America, primarily Ecuador, where Parmalat founder Calisto Tanzi allegedly hid more than US$800 million in company funds a month before the scandal broke out.
Calisto Tanzi, was arrested on allegation of fraudulent bankruptcy and is under investigation for misappropriating $994 million over the years as well as ordering employees to destroy files to sidetrack investigators, making false statements and abusing privileged financial information.
An investigation by Italian authorities into alleged fraud at the company has thus far netted the arrest of the company's founder and former chief executive, Calisto Tanzi, who has reportedly confessed to diverting some of the missing funds to private accounts.
Just days later Parmalat's founder and chairman Calisto Tanzi was arrested on suspicion of fraud and according to one of his lawyers, he has admitted diverting about pounds 300mof the company's funds.
Italian prosecutors have accused Parmalat founder Calisto Tanzi of misappropriating 800 million euros ($1 billion) from the company over the past decade.
An example, but one of many, is the discussion of Cavalli's opera La Calisto (1651) and Thomas Heywood's The Escapes of Jupiter (ca.
Rafael Velez Calisto, Arteta Arquitectos and Constructiva are among the most sought-after and prolific architects and firms.
Successivamente, la vicenda di Calisto e Melibea venne nuovamente tradotta a Venezia per ben dodid volte nel breve arco di tempo di 32 anni (dal 1519 al 1551).
Ramos and the three other athletes -- weightlifter Martinho DeAraugo, and marathon runners Calisto Da Costa and Aguida Amaral -- are scheduled to march and compete in white uniforms.
Parma, whose owner Calisto Tanzi makes Blackburn benefactor Jack Walker look short of a bob or two, have raked in nearly pounds 16m from Premiership clubs by unloading misfits whose best Serie A days are well and truly behind them.
The Calisto family includes the CES award winning Calisto 620, a multi-device speakerphone that connects to a PC and a mobile phone.