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HD 102365
HR 4523 (66 G. Centauri) is a binary star system that is located in the northeastern part of the Centaurus constellation, at a distance of about from the Solar System. The larger member of the system is a G-type star that is smaller than the Sun but of similar mass. It has a common proper motion companion that was discovered by Willem Jacob Luyten, W. J. Luyten in 1960. This M-type star appears to be in a wide orbit around the primary at a current separation of about 211 astronomical units (AU), (or 211 times the separation of the Earth from the Sun). By comparison, Neptune orbits at an average distance of 30 AU. Description The stellar classification for the primary star in this system is G2V; the same as the Sun. That of the red dwarf companion is M4V. The primary star has an estimated 86% to 89% the Solar mass, mass of the Sun, 96% of the Solar radius, Sun's radius, and 85% of the Solar luminosity, Sun's luminosity. It is a slow rotator, with a stellar rotation, proje ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurus
Centaurus is a bright constellation in the southern sky. One of the largest constellations, Centaurus was included among the 48 constellations listed by the 2nd-century astronomer Ptolemy, and it remains one of the 88 modern constellations. In Greek mythology, Centaurus represents a centaur; a creature that is half human, half horse (another constellation named after a centaur is one from the zodiac: Sagittarius). Notable stars include Alpha Centauri, the nearest star system to the Solar System, its neighbour in the sky Beta Centauri, and V766 Centauri, one of the largest stars yet discovered. The constellation also contains Omega Centauri, the brightest globular cluster as visible from Earth and the largest identified in the Milky Way, possibly a remnant of a dwarf galaxy. Notable features Stars Centaurus contains several very bright stars. Its alpha and beta stars are used as "pointer stars" to help observers find the constellation Crux. Centaurus has 281 stars above ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minimum Mass
In astronomy, minimum mass is the lower-bound calculated mass of observed objects such as planets, stars and binary systems, nebulae, and black holes. Minimum mass is a widely cited statistic for extrasolar planets detected by the radial velocity method or Doppler spectroscopy, and is determined using the binary mass function. This method reveals planets by measuring changes in the movement of stars in the line-of-sight, so the real orbital inclinations and true masses of the planets are generally unknown. This is a result of sin ''i'' degeneracy. If inclination ''i'' can be determined, the true mass can be obtained from the calculated minimum mass using the following relationship: M_\text = \frac Exoplanets Orientation of the transit to Earth Most stars will not have their planets lined up and orientated so that they eclipse over the center of the star and give the viewer on earth a perfect transit. It is for this reason that when we often are only able to extrapolat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetary Systems With One Confirmed Planet
Planetary means relating to a planet A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a ... or planets. It can also refer to: ;Science * Planetary habitability, the measure of an astronomical body's potential to develop and sustain life * Planetary nebula, an astronomical object ;People * Planetary (rapper), one half of east coast rap group OuterSpace ;Arts, entertainment, and media * ''Planetary'' (comics), a comic book series by Warren Ellis and John Cassaday * " Planetary (Go!)", a 2011 song by rock band My Chemical Romance * '' Planetary Radio'', a public radio show about space exploration, produced by The Planetary Society ;Organizations * The Planetary Society, the Earth's largest space interest group ;Technology * Epicyclic gearing (planetary gearing), an automotive tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Analogs
Solar may refer to: Astronomy * Of or relating to the Sun ** Solar telescope, a special purpose telescope used to observe the Sun ** A device that utilizes solar energy (e.g. "solar panels") ** Solar calendar, a calendar whose dates indicate the position of the Earth on its revolution around the Sun * Solar Maximum Mission, a satellite * SOLAR (ISS), an observatory on International Space Station Music * "Solar" (composition), attributed to Miles Davis * ''Solar'' (Red Garland album), 1962 * ''Solar'' (Taeyang album), 2010 * ''Solar'', a 2011 album by Rubik * "Solar", a song by Northlane from '' Mesmer'', 2017 * SOLAR Records, a record label Geography * Solar (Spanish term), a type of urban site * Solar, County Antrim, Northern Ireland, United Kingdom * Solar, Erode, India * Solar, Iran, Iran Companies * Solar Entertainment Corporation, a Philippines television and radio media company * Solar TV, a former TV channel * Solar Television Network, Inc., a former n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
G-type Main-sequence Stars
A G-type main-sequence star (Spectral type: G-V), also often, and imprecisely called a yellow dwarf, or G star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.9 to 1.1 solar masses and an effective temperature between about 5,300 and 6,000 K. Like other main-sequence stars, a G-type main-sequence star is converting the element hydrogen to helium in its core by means of nuclear fusion, but can also fuse helium when hydrogen runs out. The Sun, the star in the center of the Solar System to which the Earth is gravitationally bound, is an example of a G-type main-sequence star (G2V type). Each second, the Sun fuses approximately 600 million tons of hydrogen into helium in a process known as the proton–proton chain (4 hydrogens form 1 helium), converting about 4 million tons of matter to energy. Besides the Sun, other well-known examples of G-type main-sequence stars include Alpha Centauri, Tau Ceti, Capella and 51 Pegasi. The term ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Astronomical Journal
''The Astronomical Journal'' (often abbreviated ''AJ'' in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society (AAS) and currently published by IOP Publishing. It is one of the premier journals for astronomy in the world. Until 2008, the journal was published by the University of Chicago Press on behalf of the AAS. The reasons for the change to the IOP were given by the society as the desire of the University of Chicago Press to revise its financial arrangement and their plans to change from the particular software that had been developed in-house. The other two publications of the society, the ''Astrophysical Journal'' and its supplement series, followed in January 2009. The journal was established in 1849 by Benjamin A. Gould. It ceased publication in 1861 due to the American Civil War, but resumed in 1885. Between 1909 and 1941 the journal was edited in Albany, New York. In 1941, editor Benjamin Boss arrange ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomy & Astrophysics
''Astronomy & Astrophysics'' is a monthly peer-reviewed scientific journal covering theoretical, observational, and instrumental astronomy and astrophysics. The journal is run by a Board of Directors representing 27 sponsoring countries plus a representative of the European Southern Observatory. The journal is published by EDP Sciences and the editor-in-chief is . History Origins ''Astronomy and Astrophysics'' (A&A) was created as an answer to the publishing scenario found in Europe in the 1960s. At that time, multiple journals were being published in several countries around the continent. These journals usually had a limited number of subscribers, and published articles in languages other than English, resulting in a small number of citations compared to American and British journals. Starting in 1963, conversations between astronomers from European countries assessed the need for a common astronomical journal. On 8 April 1968, leading astronomers from Belgium, Denmark, Fran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Matthau
Walter Matthau (; born Walter John Matthow; October 1, 1920 – July 1, 2000) was an American actor, comedian and film director. He is best known for his film roles in '' A Face in the Crowd'' (1957), '' King Creole'' (1958) and as a coach of a hapless little league team in the baseball comedy '' The Bad News Bears'' (1976). He also starred in 10 films alongside Jack Lemmon, including '' The Odd Couple'' (1968), '' The Front Page'' (1974) and '' Grumpy Old Men'' (1993). Matthau won the Academy Award for Best Supporting Actor for his performance in the Billy Wilder film '' The Fortune Cookie'' (1966). Matthau is also known for his performances in Stanley Donen's romance '' Charade'' (1963), Gene Kelly's musical '' Hello, Dolly!'' (1969), Elaine May's screwball comedy '' A New Leaf'' (1971) and Herbert Ross' ensemble comedy '' California Suite'' (1978). He also starred in '' Plaza Suite'', '' Kotch'' (both 1971), '' Charley Varrick'' (1973), '' The Sunshine Boys'' (1975), and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homer J
Homer Jay Simpson is a fictional character and the main protagonist of the American animated sitcom ''The Simpsons''. He is voiced by Dan Castellaneta and first appeared, along with the rest of his family, in ''The Tracey Ullman Show'' short "Good Night" on April 19, 1987. Homer was created and designed by cartoonist Matt Groening while he was waiting in the lobby of producer James L. Brooks's office. Groening had been called to pitch a series of shorts based on his comic strip ''Life in Hell'' but instead decided to create a new set of characters. He named the character after his father, Homer Groening. After appearing for three seasons on ''The Tracey Ullman Show'', the Simpson family got their own series on Fox, which debuted December 17, 1989. The show was later acquired by Disney in 2019. As the nominal foreman of the paternally eponymous family, Homer and his wife Marge have three children: Bart, Lisa and Maggie. As the family's provider, he works at the Springfield Nu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Simpsons
''The Simpsons'' is an American animated sitcom created by Matt Groening for the Fox Broadcasting Company. The series is a satirical depiction of American life, epitomized by the Simpson family, which consists of Homer Simpson, Homer, Marge Simpson, Marge, Bart Simpson, Bart, Lisa Simpson, Lisa, and Maggie Simpson, Maggie. The show is set in the fictional town of Springfield (The Simpsons), Springfield and parodies Culture of the United States, American culture and Society of the United States, society, television, and the human condition. The family was conceived by Groening shortly before a solicitation for a series of The Simpsons shorts, animated shorts with producer James L. Brooks. He created a dysfunctional family and named the characters after his own family members, substituting Bart for his own name; he thought Simpson was a funny name in that it sounded similar to "simpleton". The shorts became a part of ''The Tracey Ullman Show'' on April 19, 1987. After three sea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bart's Not Dead
"Bart's Not Dead" is the thirtieth season premiere and 640th episode of the American animated television series ''The Simpsons''. In this episode, Bart fakes a miracle and is approached by a Christian filmmaker who wants to make an adaptation of the event, but is wracked with guilt at having lied. The episode was directed by Bob Anderson and written by Stephanie Gillis. This episode won the Writers Guild of America Award for Outstanding Writing in Animation at the 71st Writers Guild of America Awards. Plot Lisa is playing the saxophone at a school assembly when Bart is dared by Jimbo, Dolph and Kearney to pull the fire alarm, but he declines, not wanting to ruin Lisa's performance. The following day, Marge is proud of him, but Homer and Grampa tell him to take a dare like a man. At Echo Canyon, Nelson, Jimbo, Dolph and Kearney all dare him to jump off the dam. He accepts and does the dare but ends up landing face first on a concrete ledge. At Springfield General Hospital, B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Couch Gag
The opening sequence of the American animated television series ''The Simpsons'' is among the most popular opening sequences in television. It is accompanied by "The Simpsons Theme, ''The Simpsons'' Theme", one of television's most recognizable theme songs. The first episode to use this introduction was the series' second episode "Bart the Genius". Each episode has the same basic sequence of events: the camera zooms through cumulus clouds, through the show's title towards the town of Springfield (The Simpsons), Springfield. The camera then follows the members of the Simpson family on their way home. Upon entering their house, the Simpsons settle down on their couch to watch television. One of the most distinctive aspects of the opening is that three of its elements change from episode to episode: Bart Simpson, Bart writes different phrases on the school chalkboard, Lisa Simpson, Lisa plays different Solo (music), solos on her saxophone (or occasionally a different instrument), an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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