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109 Piscium
109 Piscium is a yellow hued G-type main-sequence star located about 108 light-years away in the zodiac constellation of Pisces. It is near the lower limit of visibility to the naked eye with an apparent visual magnitude of 6.27. The star is moving closer to the Earth with a heliocentric radial velocity of −45.5 km/s. It has one known exoplanet. With a stellar classification of G3 Va, this is a Sun-like star with a similar mass but a 91% larger radius. (Cowley and Bidelman (1979) had this classified as a subgiant star that is leaving the main sequence.) It is 6.75 billion years old with a higher abundance of iron and a low projected rotational velocity of 1.3 km/s. The star is radiating 2.9 times the Sun's luminosity from its photosphere at an effective temperature of . Planetary system On 1 November 1999 the discovery of an extrasolar planet orbiting this star was announced. The planet has a minimum mass of about 6 times that of Jupiter and takes jus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pisces (constellation)
Pisces is a constellation of the zodiac. Its vast bulk – and main asterism viewed in most European cultures per Greco-Roman antiquity as a distant pair of fishes connected by one cord each that join at an apex – are in the Northern celestial hemisphere. Its old astronomical symbol is (♓︎). Its name is Latin for "fishes". It is between Aquarius, of similar size, to the southwest and Aries, which is smaller, to the east. The ecliptic and the celestial equator intersect within this constellation and in Virgo. This means the sun passes directly overhead of the equator, on average, at approximately this point in the sky, at the March equinox. Features The March equinox is currently located in Pisces, due south of ω Psc, and, due to precession, slowly drifting due west, just below the western fish towards Aquarius. Stars * Alrescha ("the cord"), otherwise Alpha Piscium (α Psc), 309.8 lightyears, class A2, magnitude 3.62. Variable binary star. * Fumalsamakah ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extrasolar Planet
An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not recognized as such. The first confirmation of detection occurred in 1992. A different planet, initially detected in 1988, was confirmed in 2003. There are many methods of detecting exoplanets. Transit (astronomy), Transit photometry and Doppler spectroscopy have found the most, but these methods suffer from a clear observational bias favoring the detection of planets near the star; thus, 85% of the exoplanets detected are inside the tidal locking zone. In several cases, List of multiplanetary systems, multiple planets have been observed around a star. About 1 in 5 Solar analog, Sun-like starsFor the purpose of this 1 in 5 statistic, "Sun-like" means G-type star. Data for Sun-like stars was not available so this statistic is an extrapolation from data about K-type star, K-type stars. have an "Earth-sized"For the purpose of this 1 in 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spock
Spock is a Character (arts), fictional character in the ''Star Trek'' media franchise. He first appeared in the Star Trek: The Original Series, original ''Star Trek'' series serving aboard the starship USS Enterprise (NCC-1701), USS ''Enterprise'' as science officer and first officer (and Kirk's Second-in-command) and later as commanding officer of two iterations of the vessel. Spock's mixed human-Vulcan (Star Trek), Vulcan heritage serves as an important plot element in many of the character's appearances. Along with Captain James T. Kirk (William Shatner) and Dr. Leonard McCoy, Leonard "Bones" McCoy (DeForest Kelley), he is one of the three Central character, central characters in the original ''Star Trek'' series and List of Star Trek films, its films. After retiring from active duty in Starfleet, Spock served as a United Federation of Planets, Federation ambassador, and later became involved in the ill-fated attempt to save Romulus (Star Trek), Romulus from a supernova, leadin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klingon
The Klingons ( ; Klingon: ''tlhIngan'' ) are a fictional species in the science fiction franchise ''Star Trek''. Developed by screenwriter Gene L. Coon in 1967 for the original ''Star Trek'' (''TOS'') series, Klingons were swarthy humanoids characterized by prideful ruthlessness and brutality. Klingons practiced feudalism and authoritarianism, with a warrior caste relying on slave labor. With a greatly expanded budget for makeup and effects, the Klingons were completely redesigned for '' Star Trek: The Motion Picture'' (1979), acquiring ridged foreheads. In subsequent television series and in later films, the militaristic traits of the Klingons were bolstered by an increased sense of honor and strict warrior code similar to those of bushido. Klingons are recurring antagonists in the 1960s television series ''Star Trek'', and have appeared in all subsequent series, along with ten of the ''Star Trek'' feature films. Initially intended to be antagonists for the crew of the USS ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warp Drive (Star Trek)
The technology in ''Star Trek'' has borrowed many ideas from the scientific world. Episodes often contain technologies named after real-world scientific phenomena, such as tachyon beams, baryon sweeps, quantum slipstream drives, and photon torpedoes. Some of the technologies created for the ''Star Trek'' universe were done so out of financial necessity. For instance, the transporter was created because the limited budget of ''Star Trek: The Original Series'' (''TOS'') in the 1960s did not allow expensive shots of spaceships landing on planets. ''Discovery Channel Magazine'' stated that cloaking devices, faster-than-light travel, and dematerialized transport were only dreams at the time ''TOS'' was made, but physicist Michio Kaku believes all these things are possible. William Shatner, who portrayed James T. Kirk in ''TOS'', believes this as well, and went on to co-write the book ''I'm Working on That'', in which he investigates how ''Star Trek'' technology was becoming feasibl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supernova
A supernova is a powerful and luminous explosion of a star. It has the plural form supernovae or supernovas, and is abbreviated SN or SNe. This transient astronomical event occurs during the last evolutionary stages of a massive star or when a white dwarf is triggered into runaway nuclear fusion. The original object, called the ''progenitor'', either collapses to a neutron star or black hole, or is completely destroyed. The peak optical luminosity of a supernova can be comparable to that of an entire galaxy before fading over several weeks or months. Supernovae are more energetic than novae. In Latin language, Latin, ''nova'' means "new", referring astronomically to what appears to be a temporary new bright star. Adding the prefix "super-" distinguishes supernovae from ordinary novae, which are far less luminous. The word ''supernova'' was coined by Walter Baade and Fritz Zwicky in 1929. The last supernova to be directly observed in the Milky Way was Kepler's Supernova in 160 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diane Duane
Diane Duane (born May 18, 1952) is an American science fiction and fantasy author, long based in Ireland. Her works include the ''Young Wizards'' young adult fantasy series and the '' Rihannsu'' Star Trek novels. Biography Born in New York City, she grew up in Roosevelt, Long Island. After school, she studied nursing and practiced as a psychiatric nurse for two years until 1976, when she moved to California and worked as an assistant to David Gerrold. Her first novel was published by Dell Books in 1979; Gerrold wrote an "overture" to that novel, on the grounds that he'd rather be making overtures than introductions to Duane's work. She subsequently worked as a freelance writer. In 1981 she moved to Pennsylvania. She married Northern Irish author Peter Morwood in 1987; they moved to the United Kingdom and then to Ireland, where they reside in County Wicklow. Bibliography Young Wizards # # # # # # # # # # # A short story within the same universe, "Uptown Loc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Wounded Sky
The Wounded Sky is a 1983 Star Trek novel (Pocket Books #13) by Diane Duane, featuring James T. Kirk as captain of the ''USS Enterprise''. The author would four years later adapt the novel's plot for the teleplay of the first season '' Star Trek: The Next Generation'' episode "Where No One Has Gone Before". Plot The ''Enterprise'', equipped with a radical new "inversion drive" which allows the ship to bend spacetime and transit immense distances instantly, is sent on a mission to the Magellanic Clouds just outside the Milky Way, in order to place navigation beacons for future extra-galactic voyages using the new technology. The inversion drive is a product of the "creative physics" practiced by the natives of the Hamal star system, a race of crystalline spider-like beings. The chief designer of the drive is aboard, advising Captain Kirk, as the ''Enterprise'' makes its first "jump", after outmaneuvering a Klingon squadron which was sent to capture the new technology. Unknown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star Trek
''Star Trek'' is an American science fiction media franchise created by Gene Roddenberry, which began with the eponymous 1960s television series and quickly became a worldwide pop-culture phenomenon. The franchise has expanded into various films, television series, video games, novels, and comic books. With an estimated $10.6 billion in revenue, it is one of the most recognizable and highest-grossing media franchises of all time. The franchise began with ''Star Trek: The Original Series'', which debuted in the US on September 8, 1966 and aired for three seasons on NBC. It was first broadcast on September 6, 1966 on Canada's CTV network. It followed the voyages of the crew of the starship USS ''Enterprise'', a space exploration vessel built by the United Federation of Planets in the 23rd century, on a mission "to explore strange new worlds, to seek out new life and new civilizations, to boldly go where no man has gone before". In creating ''Star Trek'', Roddenberry w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
109 Piscium B
109 Piscium b (aka HD 10697 b) is a long-period extrasolar planet discovered in orbit around 109 Piscium. It is about 5.74 times the mass of Jupiter and is likely to be a gas giant. As is common for long-period planets discovered around other stars, it has an orbital eccentricity greater than that of Jupiter. The discoverers estimate its effective temperature as from solar heating, but it could be at least 10 to 20 K warmer because of internal heating. Preliminary astrometric measurements suggested that the orbital inclination is 170.3°, yielding an object mass of 38 times that of Jupiter, which would make it a brown dwarf. However, subsequent analysis indicates that the precision of the measurements used to derive the astrometric orbit is insufficient to constrain the parameters. A more plausible suggestion is that this planet shares its star's inclination, of 69°. In 2022, the inclination and true mass of 109 Piscium b were measured via astrometry. The inclination estimate i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrometry
Astrometry is a branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies. It provides the kinematics and physical origin of the Solar System and this galaxy, the Milky Way. History The history of astrometry is linked to the history of star catalogues, which gave astronomers reference points for objects in the sky so they could track their movements. This can be dated back to Hipparchus, who around 190 BC used the catalogue of his predecessors Timocharis and Aristillus to discover Earth's precession. In doing so, he also developed the brightness scale still in use today. Hipparchus compiled a catalogue with at least 850 stars and their positions. Hipparchus's successor, Ptolemy, included a catalogue of 1,022 stars in his work the '' Almagest'', giving their location, coordinates, and brightness. In the 10th century, Abd al-Rahman al-Sufi carried out observations on the stars and described their positions, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extrasolar Planets Encyclopaedia
The Extrasolar Planets Encyclopaedia is an astronomy website, founded in Paris, France at the Meudon Observatory by Jean Schneider in February 1995, which maintains a database of all the currently known and candidate extrasolar planets, with individual pages for each planet and a full list interactive catalog spreadsheet. The main catalogue comprises databases of all of the currently confirmed extrasolar planets as well as a database of unconfirmed planet detections. The databases are frequently updated with new data from peer-reviewed publications and conferences. In their respective pages, the planets are listed along with their basic properties, including the year of planet's discovery, mass, radius, orbital period, semi-major axis, eccentricity, inclination, longitude of periastron, time of periastron, maximum time variation, and time of transit, including all error range values. The individual planet data pages also contain the data on the parent star, including name, di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
