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Perdita (moon)
Perdita is an inner satellite of Uranus. Perdita's discovery was complicated. The first photographs of Perdita were taken by the ''Voyager 2'' spacecraft in 1986, but it was not recognized from the photographs for more than a decade. In 1999, the moon was noticed by Erich Karkoschka and reported. But because no further pictures could be taken to confirm its existence, it was officially demoted in 2001. However, in 2003, pictures taken by the Hubble Space Telescope managed to pick up an object where Perdita was supposed to be, finally confirming its existence. Following its discovery in 1999, it was given the temporary designation of S/1986 U 10. It was named Perdita (Latin for 'lost') after the daughter of Leontes and Hermione in William Shakespeare's play ''The Winter's Tale''. The moon is also designated Uranus XXV. The moon orbits between Belinda and Puck. The above-mentioned Hubble measurements prove that Perdita does not follow a direct Keplerian motion aro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erich Karkoschka
Erich Karkoschka (born 1955) is a planetary researcher at the Lunar and Planetary Laboratory of the University of Arizona. He discovered a satellite of Uranus, S/1986 U 10 (later named Perdita (moon), Perdita) on photographs taken by the Voyager 2 spacecraft. He has assembled a number of movies including: the Huygens (spacecraft), Huygens landing on the moon Titan (moon), Titan, the seasonal patterns on Uranus, and a rare triple eclipse on Jupiter. The Jupiter and Uranus images were released as US postage stamps in 2016. His book, ''The Observer's Sky Atlas'', has been translated into several languages as a resource for those interested in observing the sky. An asteroid, 30786 Karkoschka (1988 QC), is named in his honour. References {{DEFAULTSORT:Karkoschka, Erich American astronomers Living people University of Arizona faculty 1955 births Planetary scientists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puck (moon)
Puck is an inner moon of Uranus. It was discovered in December 1985 by the ''Voyager 2'' spacecraft. The name ''Puck'' follows the convention of naming Uranus's moons after characters from Shakespeare. The orbit of Puck lies between the rings of Uranus and the first of Uranus's large moons, Miranda. Puck is approximately spherical in shape and has diameter of about 162 km. It has a dark, heavily cratered surface, which shows spectral signs of water ice. Discovery and naming Puck—the largest inner moon of Uranus—was discovered from the images taken by ''Voyager 2'' on 30 December 1985. It was given the temporary designation S/1985 U 1. The moon was later named after the character Puck who appears in Shakespeare's '' A Midsummer Night's Dream'', a little sprite who travels around the globe at night with the fairies. In Celtic mythology and English folklore, a '' Puck'' is a mischievous sprite, imagined as an evil demon by Christians. It is also designat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Planetary Society
The Planetary Society is an American internationally-active non-governmental nonprofit organization. It is involved in research, public outreach, and political space advocacy Space advocacy is supporting or advocating for a human use of outer space. Purposes advocated can reach from space exploration, or commercial use of space to even space settlement. There are many different individuals and organizations dedicat ... for engineering projects related to astronomy, planetary science, and space exploration. It was founded in 1980 by Carl Sagan, Bruce C. Murray, Bruce Murray, and Louis Friedman, and has about 60,000 members from more than 100 countries around the world. The Society is dedicated to the exploration of the Solar System, the search for near-Earth objects, and the search for extraterrestrial life. The society's mission is stated as: "Empowering the world’s citizens to advance space science and exploration." The Planetary Society is a strong advocate for space ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth anniv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moons Of Uranus
Uranus, the seventh planet of the Solar System, has 27 known moons, most of which are named after characters that appear in, or are mentioned in, the works of William Shakespeare and Alexander Pope. Uranus's moons are divided into three groups: thirteen inner moons, five major moons, and nine irregular moons. The inner and major moons all have prograde orbits, while orbits of the irregulars are mostly retrograde. The inner moons are small dark bodies that share common properties and origins with Uranus's rings. The five major moons are ellipsoidal, indicating that they reached hydrostatic equilibrium at some point in their past (and may still be in equilibrium), and four of them show signs of internally driven processes such as canyon formation and volcanism on their surfaces. The largest of these five, Titania, is 1,578 km in diameter and the eighth-largest moon in the Solar System, about one-twentieth the mass of the Earth's Moon. The orbits of the regular moons are near ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cupid (moon)
Cupid is an inner satellite of Uranus. It was discovered by Mark R. Showalter and Jack J. Lissauer in 2003 using the Hubble Space Telescope. It was named after a character in William Shakespeare's play ''Timon of Athens''. It is the smallest known inner Uranian satellite, crudely estimated to be only about 18 km in diameter. This and the dark surface made it too dim to be detected by the ''Voyager 2'' cameras during its Uranus flyby in 1986. The orbit of Cupid differs only by 863 km from the orbit of the larger moon Belinda. Unlike Mab and Perdita, Uranian satellites also discovered in 2003, it does not seem to be perturbed. Following its discovery, Cupid was given the temporary designation S/2003 U 2. It is also designated Uranus XXVII. It should not be confused with the asteroid 763 Cupido 763 Cupido ('' prov. designation:'' ''or'' ) is a Flora asteroid, tumbler and slow rotator from the inner regions of the asteroid belt, approximately in diameter. It was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juliet (moon)
: ''There is also an asteroid called 1285 Julietta.'' Juliet is an inner satellite of Uranus. It was discovered from the images taken by ''Voyager 2'' on 3 January 1986, and was given the temporary designation S/1986 U 2. It is named after the heroine of William Shakespeare's play ''Romeo and Juliet''. It is also designated Uranus XI. Juliet belongs to Portia Group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Rosalind, Cupid, Belinda and Perdita. These satellites have similar orbits and photometric properties. Other than its orbit radius of 53 km and geometric albedo of 0.08, virtually nothing is known about Juliet. On the Voyager 2 images Juliet appears as an elongated object, the major axis pointing towards Uranus. The ratio of axes of Juliet's prolate spheroid is 0.5 ± 0.3, which is rather an extreme value. Its surface is grey in color. Juliet may collide with Desdemona within the next 100 million years. See also * Moons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portia (moon)
Portia is an inner satellite of Uranus. It was discovered from the images taken by ''Voyager 2'' on 3 January 1986, and was given the temporary designation S/1986 U 1. The moon is named after Portia, the heroine of William Shakespeare's play ''The Merchant of Venice''. It is also designated Uranus XII. Portia is the second-largest inner satellite of Uranus after Puck. The Portian orbit, which lies inside Uranus' synchronous orbital radius, is slowly decaying due to tidal deceleration. The moon will one day either break up into a planetary ring or hit Uranus. It heads a group of satellites called the Portia Group, which includes Bianca, Cressida, Desdemona, Juliet, Rosalind, Cupid, Belinda and Perdita. These satellites have similar orbits and photometric properties. Little is known about Portia beyond its size of about 140 km in diameter, orbit, and geometric albedo of about 0.08. In the Voyager 2 images, Portia appears as an elongated object whose major ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desdemona (moon)
: ''There is also a minor planet called 666 Desdemona.'' Desdemona is an inner satellite of Uranus. It was discovered from the images taken by ''Voyager 2'' on 13 January 1986, and was given the temporary designation S/1986 U 6. Desdemona is named after the wife of Othello in William Shakespeare's play '' Othello''. It is also designated Uranus X. Desdemona belongs to Portia Group of satellites, which also includes Bianca, Cressida, Juliet, Portia, Rosalind, Cupid, Belinda and Perdita. These satellites have similar orbits and photometric properties. Other than its orbit, radius of 32 km and geometric albedo of 0.08 virtually nothing is known about Desdemona. At the Voyager 2 images Desdemona appears as an elongated object, the major axis pointing towards Uranus. The ratio of axes of Desdemona's prolate spheroid is 0.6 ± 0.3. Its surface is grey in color. Desdemona may collide with one of its neighboring moons Cressida or Juliet within the next 100 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cressida (moon)
: ''There is also an asteroid called 548 Kressida.'' Cressida 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, radius of 41 km and geometric albedo of 0.08, virtually nothing is known about it. In the Voyager 2 images Cressida appears as an elongated object, its major axis pointing towards Uranus. The ratio of axes of Cressida's prolate spheroid is 0.8 ± 0.3. Its surface is grey in color. Cres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bianca (moon)
: ''There is also an asteroid called 218 Bianca.'' Bianca is an inner satellite of Uranus. It was discovered from the images taken by ''Voyager 2'' on January 23, 1986, and was given the temporary designation S/1986 U 9. It was named after the sister of Katherine in Shakespeare's play ''The Taming of the Shrew''. It is also designated Uranus VIII. Bianca belongs to the Portia group of satellites, which also includes Cressida, Desdemona, Juliet, Portia, Rosalind, Cupid, Belinda and Perdita. These satellites have similar orbits and photometric properties. Other than its orbit, radius of 27 km, and geometric albedo of 0.08 virtually nothing is known about it. In ''Voyager 2'' images Bianca appears as an elongated object, the major axis pointing towards Uranus. The ratio of axes of the Bianca's prolate spheroid is 0.7 ± 0.2. Its surface is grey in color. See also * Moons of Uranus References Explanatory notes Citations External links Bian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosalind (moon)
: ''There is also an asteroid called 900 Rosalinde.'' Rosalind is an inner satellite of Uranus. It was discovered from the images taken by ''Voyager 2'' on 13 January 1986, and was given the temporary designation S/1986 U 4. It was named after the daughter of the banished Duke in William Shakespeare's play ''As You Like It''. It is also designated Uranus XIII. Rosalind belongs to Portia group of satellites, which also includes Bianca, Cressida, Desdemona, Portia, Juliet, Cupid, Belinda and Perdita. These satellites have similar orbits and photometric properties. Other than its orbit, radius of 36 km and geometric albedo of 0.08 virtually nothing is known about Rosalind. In the Voyager 2 images Rosalind appears as an almost spherical object. The ratio of axes of Rosalind's prolate spheroid is 0.8-1.0. Its surface is grey in color. Rosalind is very close to a 3:5 orbital resonance with Cordelia. See also * Moons of Uranus References Explanatory note ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
