what are arcturus classified as?
>>By c (Sunday, 26 Jan 2003 09:24)
GOD BAND! (Monday, 3 Feb 2003 10:37)
Arcturus is ODIN's own band! The best gothic-metal group in the world!
>>By olaf the viking (Sunday, 16 Feb 2003 14:53)
Arcturus is ODIN's own band! The best symphonic-metal group in the world!
>>By olaf the viking (Sunday, 16 Feb 2003 14:54)
arcturus are a FANTASTIC band with mind blowing melodies that one cannot compare anything else to.
>>By memmius (Saturday, 3 May 2003 02:12)
What's the adress to Arcturus present, real homepage?
>>By DB (Thursday, 26 Jun 2003 17:31)
Arcturus is the true art, a project of some great musicians such as Hellhammer which in my oppinion has a great style of drum playing, with very inspired tempo changes ( especially in La Masquerade Infernale); Sverd creates a fantastic atmosphere with his celestial sound and K.Valle has an unique guitar solo with chromatic hammer-ons and pull-offs of a great speed and accuracy and for me he is the most inspired guitarist I've ever listened. I listen Arcturus all day, I think I'm obsessed or something but I guess you understand why.
>>By Dynak (Wednesday, 1 Oct 2003 11:26)
Terrific new album! Sad that Garm left but Simen comes through for the Arcturus fans in fine style. The album seems like it should have come out between LMI and SM because it has a nice mix of both albums. Evacuation Code Complete is my favorite song. Top notch performance from everyone as usual. =)
>>By DreamingofUr (Friday, 7 Oct 2005 07:46)
Oh Yeah, this is the definitaly THE album to dream away under a beautyful starry nightsky. Magnificent melodies supported by the perfect tom tom and double bass assaults of Hellhammer. Also very enjoyable is the absolute cristal clear voice of Simen Hestnaes. Great album + great musicians.
>>By Waddinxslayer (Friday, 7 Oct 2005 20:27)
i enjoyed "la mascarade infernale". so fucking mesmerizing!!
>>By the haunted (Monday, 23 Oct 2006 01:02)
The discussion board is currently closed.
Arcturus may refer to:
* Arcturus. a star known for its brightness.
**Arcturus in works of fiction, for fictional references to the star.
* Arcturus (band). an avant-garde metal Norwegian band.
* Arcturus (steamship). a passenger ship of the Finland Steamship Company.
* Arcturus, Zimbabwe. a village in the province of Mashonaland East, Zimbabwe.
* Arcturus Mengsk. the leader of the Sons of Korhal and later Emperor in the "StarCraft" computer game series.
* Project Arcturus. a failed Ancient power-source project in the "Stargate Atlantis" television series.
* Arcturus Group. a consultancy based in Brussels
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Staff Writer (Updated: 12/12/2011):
The Arcturus T-20 was initially developed as a private venture by the Arcturus-UAV LLC concern of California, USA and furthered by the US Air Force Research Laboratory. Arcturus-UAV LLC, as its name suggests, is a developer of Unmanned Aerial Vehicles (UAVs) featured in both commercial and military applications. Today, the firm markets three distinct models of UAVs made up of the "T-15", "T-16" and - its largest UAV design to date - the "T-20". The T-20 is classified as a medium-range, reusable reconnaissance UAV which dictates a payload of advanced sensors, cameras and other applicable surveillance, tracking and monitoring equipment. First flight of the T-20 was recorded in 2008 while the United States military evaluated the system in early 2009. To date some 10 have been delivered while a full complement of 160 is ultimately expected.
Design of the T-20 is of a conventional aircraft nature with the airframe constructed largely of composites. Its design is characterized by its slab-sided fuselage capped with a nose-mounted engine installation and a traditional "T-style" tail assembly at the rear. Avionics are housed in the aft portion of the fuselage while fuel is stored throughout the wings. The empennage is made up of a single large vertical tail rudder completed with a horizontal tail surface at its extreme top. The main wing assemblies are shoulder-mounted which allow for strong lift capabilities (especially at launch) and good ground clearance overall (with four underwing hardpoints available for parachuting "drop pods"). Each wing is straight in their design and feature clipped wingtips. The internal fuselage bay can house up to 65lbs while a modular pallet system allows awaiting ground personnel the capability to replace existing payloads within minutes, getting the T-20 back airborne in the shortest amount of time possible. An onboard camera suite allows for real-time relay of the visual feed to the applicable ground station and offers an unobstructed 360-degree field-of-view (FOV). The T-20 is also completed with integrated electro-optical, infrared and target laser systems as well as a GPS-based autopilot which can autonomously navigate preset waypoints.
The T-20 airframe enjoys a full wingspan of 17.25 feet with a running length of 9.4 feet and is powered by a single fuel-injected, 4-stroke gasoline engine of 10 horsepower fitted to the nose, this managing a two-bladed propeller. Top listed speed is 104 miles per hour with a cruise speed of 63 miles per hour. The T-20s configuration allows for a mission endurance time of over 16 hours (this with a 35lb payload - up to 500 miles at altitudes of 15,000 feet). Empty weight is listed at 80lbs while a full mission load sees the T-20 weigh in at 165lbs.
While the T-20 lacks any integrated undercarriage facilities, the aircraft is allowed airborne via the included pneumatic portable catapult. This launch system is formally designated by Arcturus as the "Portable Launching System" (PLS) and can be set up for UAV operations from land or sea-based naval vessels - literally anywhere in the world where a flat landing surface can be found for the UAVs recovery. The Arcturus T-20 can land in one of two ways - via a prepared net arrangement or along its belly on a skid. This allows the T-20 to operate just about anywhere it has the space to both launch and be recovered and does not require the prepared runaway facilities of its larger, more expensive brethren.
Name : Arcturus
Designation : Alpha Boötis
Constellation : Boötes
Apparent Magnitude : -0.1
Absolute Magnitude : -0.2
Distance : 37 light years
Luminosity x Sun : 115
Frontier Coordinates : -2,0
Arcturus is a bright orange star easily visible from most latitudes on Earth. It can be found by following the arc of Ursa Major's tail. In fact the name Arcturus itself is derived from the Greek phrase for "Bear's Tail". Arcturus is classified as a giant star and is approaching our own solar system at around 5km per second. No need to worry though, it will soon start to recede and in a few hundred thousand years will not even be visible to the naked eye.
In Frontier, Arcturus is well know for the planet Discovery, where seasons last for around seven Earth years. This gives rise to large re-settlement patterns which follow the summer seasons around the planet, and cause those who don't migrate to grow up with distinct personalities according to which season they spent their formative years in.
During the mid-23rd century. Arcturus IV was a haven for thieves, criminals and malcontents from all over the Alpha and Beta Quadrants. In 2264. the Klingon renegade Koronin obtained a Klingon Bird-of-Prey after beating its captain in a game on Arcturus. She renamed the ship Quundar . and set off for the Federation Phalanx to wage war on the Federation. (TOS novel. Enterprise: The First Adventure )
As of 2271. Arcturus was still an independent world without government, stubbornly resisting joining the Klingons. Romulans. or Federation. It was technically inside Federation territory, but avoided by Border Patrol and Starfleet. It served as a neutral meeting place for humans. Romulans. and Klingons. The planet had joined the Federation by 2273.Planetary Information Edit Astronomical Data Edit
Arcturus IV is a planet in the Alpha Quadrant with seven moons. Once every six years, three of Arcturus's moons would be full at once. This was considered a mystical time by the natives, when "very strange, very wonderful" things could happen.
Star Charts puts forth that the planet is in the Alpha Quadrant.Geography Edit
Arcturus IV's general climate is classified as warm and temperate.Natural History Edit Behind the scenes Edit
The Entropy Effect indicates the planet was already part of the Federation in 2270 ; however, according to The Lost Years . as of 2271, the world was still anarchic and independent. Peaceable Kingdoms also indicates that this was still the case in 2385.References Edit External Links Edit
(ärkto͝or`əs). brightest star in the constellation Boötes Boötes
[Gr.,=the herdsman], northern constellation located to the SE of the Big Dipper in Ursa Major and W of Corona Borealis, the Northern Crown. It contains the brilliant orange star Arcturus.
. Click the link for more information. and 4th-brightest star in the entire sky; Bayer designation Alpha Boötis; 1992 position R.A. 14 h 15.3 m. Dec. +19°13'. An orange giant of spectral class spectral class,
in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically.
. Click the link for more information. K2 III, it has an apparent magnitude magnitude,
in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the dimmest stars
. Click the link for more information. of −0.06; its diameter is about 10 times that of the sun and its luminosity about 100 times that of the sun. Arcturus is one of the nearest giant stars, at a distance of about 36 light-years, and has one of the largest proper motions proper motion,
in astronomy, apparent movement of a star on the celestial sphere, usually measured as seconds of arc per year; it is due both to the actual relative motions of the sun and the star through space. Proper motion reflects only transverse motion, i.e.
. Click the link for more information. (annual angular shift in position) of the bright stars. Its name is from the Greek meaning "guardian of the bear," and it can be found by following the extension of the curve of the handle of the Big Dipper (Large Bear).
(ark-toor -ŭs, =tyoor -) ( α Boo ) A conspicuous red giant that is the brightest star in the constellation Boötes and the second-brightest star in the northern sky (after the Sun). The three stars Alioth, Mizar, and Alcaid in the handle of the Big Dipper point in its direction. Arcturus is a high-velocity star and shows spectral peculiarities. mv. –0.04; Mv. –0.2; spectral type: K2 IIIp; radius (by interferometer): 28 times solar radius; distance: 10 pc.Arcturus
A star that is 36 light-years from the sun; spectral classification K2IIIp. Also known as α Boötes.
Economic assessment for the first 17 years of mine life for the Arcturus Project envisages 70.
Springsure Creek and Arcturus projects are located within 14 km of each other in Bandanna's so called "Golden Triangle" of projects.
Thorough and rigorous environmental assessments of Springsure Creek, Arcturus and Dingo West are also being undertaken to gain approvals in accordance with the relevant environmental legislation and approvals processes,'' Dr Shaw said.
Freescale's M53281KIT is a VoIP reference platform, evaluation and development kit featuring a host board, VoIP module based on the ColdFire[R] MCF53281 MCU family, VoIP voice processing software and a Middleware stack from Arcturus .
Pad Chivukula, CSO and COO of Arcturus Therapeutics.
Dr Ray Shaw further confirmed "the commencement of the environmental approvals process for the Springsure Creek and Arcturus projects, together with the Dingo West coal project, is seen as a key step in moving from explorer to producer, and further underpins the company's involvement in the development of the Wiggins Island Coal Export Terminal at Gladstone".
Arcturus Therapeutics is an excellent example of the region's entrepreneurial spirit.
It is dominated by Arcturus. a brilliant orange star and the fourth brightest star in the entire sky.
Some astronomers said good nights for viewing, weather permitting, will be Thursday and Friday nights this week when the comet can be seen almost overhead near the very bright star Arcturus .
Investors in the company include Solstice Capital, Valley Ventures, Merck Capital Ventures, Village Ventures and Arcturus Capital.
SAN DIEGO, June 11, 2015 /PRNewswire/ -- Arcturus Therapeutics, Inc.
introduces the newest model in its Arcturus Bay Light series.
Arcturus, Alpha Boötis, is the brightest star in Boötes constellation and the fourth brightest star in the sky.
With an apparent magnitude of -0.04, Arcturus is the brightest star in the northern celestial hemisphere. (The three brightest stars – Sirius in Canis Major. Canopus in Carina. and Alpha Centauri in Centaurus – lie south of the celestial equator.)
Arcturus is only slightly brighter than Vega. the second brightest northern star. It is the third individual brightest star in the sky because it outshines the individual components of the Alpha Centauri system. It lies relatively close to Earth, at a distance of only 36.7 light years from the solar system.
Arcturus marks the left foot of Boötes, the Herdsman. It is an orange giant star with the stellar classification K1.5 IIIpe. The suffix –pe stands for “peculiar emissions.” Arcturus has an absolute magnitude of -0.30 and is one of the most luminous nearby stars, along with Sirius and Vega. Arcturus is the brightest class K giant in the sky.
Arcturus, image: Es08 at wikipedia.org
The name Arcturus is derived from the Greek Αρκτοῦρος (Arktouros) or ἄρκτος (arktos) and οὖρος (ouros), meaning “Bear Watcher” or “Guardian of the Bear,” referring to the bear represented by the neighbouring constellation Ursa Major .
Arcturus is believed to have run out of the hydrogen supply in its core and is in its active hydrogen shell burning stage. The star will continue to expand in size and eventually enter the horizontal branch phase of its evolutionary cycle. It will likely end its life cycle by ejecting its outer shell and leaving behind a white dwarf surrounded by a planetary nebula. The star’s estimated age is 7.1 billion years, possibly up to 8.5 billion years.
Arcturus is about 113 times more visually luminous than the Sun, but taking the star’s infrared emission into account, it has a luminosity 180 times that of the Sun. Arcturus has a near-infrared J band magnitude of -2.25, making it dimmer only than Betelgeuse (-2.9) in Orion and R Doradus (-2.6) in Dorado constellation .
Arcturus does not have any known planets or confirmed substellar companions. The presence of a substellar object with almost 12 times the mass of Jupiter, lying at a distance of 1.1 astronomical units from the star, was suspected in 1993, but has not been confirmed.
Finding Arcturus in the night sky.
Arcturus is very easy to find in the night sky. It lies less than 20 degrees north of the celestial equator and can be seen from both hemispheres. It can be located by following the arc of the Big Dipper ‘s handle. It is the first bright star that appears along the imaginary line extending from Alkaid in the direction opposite to the Big Dipper. The same imaginary line leads to the bright star Spica in Virgo constellation .
Alpha Boötis culminates at midnight on April 27 and around 9 pm on June 10. The best time of year to observe the star is in the late northern spring or southern autumn. In the northern hemisphere, Arcturus is visible for at least some part of the night throughout the year.FACTS
Arcturus was the first star other than the Sun to be observed in the daytime with a telescope. The French astronomer Jean-Baptiste Morin observed it in 1635. Arcturus can be seen with the naked eye just before sunset.
Arcturus is slightly metal deficient, which suggests that it is a very old star, one belonging to an older population of stars, and one of the stars in the Milky Way’s thick disk. Population II stars like Arcturus make up only around 4 percent of all stars in the neighbourhood of the solar system.
Arcturus and a group of 52 other old disk stars share a common proper motion. The group is known as the Arcturus Stream. These stars don’t travel with the general stream of stars in the Milky Way’s disk. Instead, they are cutting perpendicularly across the disk. They are moving at a greater speed and at a different angle than other stars in the Milky Way Galaxy. For this reason, Arcturus will eventually move out of our line of sight. When it does, millions of years from now, Arcturus will be invisible to observers on Earth, or at least it won’t be visible to the naked eye.
Arcturus was formed in our galaxy’s large spherical halo. It moves in an elliptical orbit, unlike the Sun, which moves with the galaxy’s plane.
Image of Boötes taken from software Perseus. Image: Roberto Mura
A different theory suggests that the stars in the Arcturus Stream may have entered our system as a result of the Milky Way colliding with a smaller satellite dwarf galaxy more than 5 billion years ago.
Arcturus is believed to have come into our system about 500,000 years ago, and it will likely stay here for another 500,000 years before continuing its journey in the direction of the Virgo Cluster of galaxies.
Muphrid, Eta Boötis, lies only 3.3 light years away from Arcturus. Seen from the Arcturus system, the star would have an apparent magnitude of -2.5. To an observer in the Muphrid system, Arcturus would appear as bright as Venus is to us.
A radial velocity study of the star in 1988 revealed that Arcturus showed variability with a frequency of a few microhertz. Astronomers believe that the star’s surface oscillates slightly, which is a common feature to red giants. Arcturus is not very red and it falls somewhere between stability and variability. It is classified as a New Suspected Variable (NSV) and has the designation NSV 6603.
Arcturus has a very high proper motion. The star is moving at 122 km/s relative to the solar system. It has a larger proper motion than any other first magnitude star in our neighbourhood with the exception of Alpha Centauri. The star’s motion was first discovered in 1718 by Sir Edmond Halley.
Arcturus will make its closest approach to the Sun in about 4,000 years. When it does, it will be a few hundredths of a light year nearer to the solar system than it is now.
Alpha Boötis was significantly closer to the centre of the constellation in ancient times.
Arcturus’ size relative to the Sun. Image: AlexbroPA at wikipedia.org
As the brightest star in the northern celestial hemisphere, Arcturus has been noted by observers since antiquity. In Mesopotamia, the star was associated with the god Enlil, sometimes also known as Shudun, meaning “yoke.”
The Greek astronomer Ptolemy described Arcturus as “slightly red” in colour. Ancient Romans believed that the star’s activity was supposed to portend tempestuous weather. Plautus’ comedy Rudens has a personification of Arcturus as the narrator of the prologue.
The Chinese know Arcturus as Da Jiao, which means “the great horn.” It is the brightest star in the Chinese constellation Jiao Xiu, meaning “horn mansion.” Arcturus later became part of a different constellation, Kang Xiu.
In Japan, the star is known as Mugi-boshi. The name means “star of wheat.”
In Hawaii, Arcturus is the zenith star.
In prehistoric Polynesia, the star was known as Hōkūleʻa, meaning “the star of joy.” Polynesian navigators used Arcturus to travel east and north in their canoes from Tahiti and the Marquesas Islands. As they crossed the equator, they arrived to the latitude at which the star would appear directly overhead in the summer months. If they kept the star directly overhead, they would arrive to the Big Island of Hawaii. To sail back to Tahiti, the navigators could use Sirius. the bright zenith star of their home island.
In Indonesia, Arcturus is called Bintang Biduk, which means “the star of boat.”
The Boötes and Coma Berenices constellations. The view is mirrored following the tradition of celestial globes, showing the celestial sphere in a view from “outside.” Johannes Hevelius drew the constellation in Uranographia, his celestial catalogue in 1690. Image: Johannes Hevelius, scanned by Torsten Bronger
Aboriginal Australians also had several names for the star. The Wotjobaluk Koori people knew it as Marpean-kurrk, mother of Djuit, represented by the bright star Antares in the constellation Scorpius. The star’s appearance in the northern sky signalled the arrival of the larvae of the wood ant in the spring. In early summer, the star would set with the Sun in the western sky and the larvae would be gone. The people of Milingimbi associated Arcturus and Muphrid with a man and a woman. When Arcturus appeared at dawn, they would take this as a sign to go harvest spikerush. The Wailwun people called the star Guembila, meaning “red.”
The star’s Arabic name is Simak Al Ramih, or as-simāk ar-rāmiħ. meaning “the uplifted one of the lancer.” The other star called the uplifted one, or al-simāk. is Spica in the constellation Virgo. Another Arabic name for Arcturus is Haris el-Sema, derived from ħāris al-samā’. which means “the keeper of the heaven,” or ħāris al-shamāl’. meaning “the keeper of the north.”
In India, astrologers called Arcturus Svati. The name is derived from a Sanskrit phrase meaning “very beneficient.”
The Inuit know the star as Uttuqalualuk, the Old Man, and as Sivulliik, the First Ones. The Lakota Sioux called Arcturus Itkob, which means “going towards.”
The name Arcturus has been around since at least Hesiod’s time. The Greek poet mentioned the star in his book Works and Days. written around 750 BC.
Arcturus is sometimes called Job’s Star because it is one of the few stars mentioned in the Bible, in The Book of Job (King James version, 9:9 “Which maketh Arcturus, Orion. and Pleiades. and the chambers of the south,” 38:32 “Canst thou bring forth Mazzaroth in his season? or canst thou guide Arcturus with his sons?”)
Arcturus appears in many works of fiction, including the novels A Voyage to Arcturus (1920) by David Lindsay, Fredric Brown’s What Mad Universe (1949), Isaac Asimov’s Foundation series (1951-), Gordon R. Dickson’s Arcturus Landing (1978), M.A.R. Barker’s Tékumel novels and games, Douglas Adams’ The Hitchhiker’s Guide to the Galaxy (1978-) novels, Superman: Last Son of Krypton (1978) by Elliot S. Maggin, Stanislaw Lem’s Return from the Stars (1980), and Jack Vance’s The Book of Dreams (1981).
The star is also mentioned in many films, including Aliens (1986) and Spaced Invaders (1990), and television shows, including Buck Rogers in the 25th Century (1979-1981) and “The Curse of the Peladon” (1972) serial in Doctor Who .
Arcturus in Boötes constellation. Image: Torsten Bronger
Arcturus also appears in a number of games, including Star Control II. Frontier: Elite II. Frontier: First Encounters. Escape Velocity Nova. and Mass Effect .
The star was famously selected for the opening of the 1933 Chicago World’s Fair. At the opening event on May 27, 1933, telescopes focused Arcturus’ light on a few photoelectric cells, and used the current to switch on the floodlights and open the Century of Progress Exhibition.
Arcturus was chosen because it was believed that the star’s light had started its journey to Earth at the time of the previous Chicago World’s Fair, held in 1893. In 1933, the star was thought to be 40 light years distant from Earth. Arcturus’ distance was later corrected to 36.7 light years, which means that the light had in fact started its journey from the star in 1896.
Arcturus – Alpha Boötis
Coordinates: 14h 15m 39.7s (right ascension), +19°10’56” (declination)
Spectral class: K1.5IIIFe-0.5
Distance: 36.7 light years (11.24 parsecs)
Apparent magnitude (V): -0.04
Apparent magnitude (J): -2.25
Absolute magnitude: -0.30
Mass: 1.10 solar masses
Radius: 25.7 solar radii
Luminosity: 170 solar luminosities
Temperature: 4,290 K
Rotational Velocity: 2.4 km/s
Designations: Arcturus, Alpha Boötis, α Boötis, 16 Boötis, HD 124897, HR 5340, HIP 69673, LHS 48, BD+19°2777, GCTP 3242.00, GJ 541, FK5 526, SAO 100944, LTT 14184, LFT 1084, NSV 6603
Arcturus - Alpha Bootis - HD124897 - HIP69673
Arcturus is a star that is within our galaxy. the Milky Way. It can be located in the constellation of bootes. It is the 5th brightest star in the night sky. Alpha Bootis is the Bayer Classification for the star in the constellation. Arcturus is a multiple star system with 2 stars orbiting in its solar system.
Arcturus is a massive star, it is many times bigger than our own The Sun. It is orange in colour meaning that its temperature based on the Hertzsprung-Russell diagram, it is between 4,000 to 5,250 Kelvin, hot enough to fry an egg. It is not as hot as the Sun which has a rough temperature of about 5,300 to 6,000 k.
Arcturus is the fourth brightest star in the sky, after -1.44 magnitude Sirius. -0.62 Magnitude Canopus and -0.27 Magnitude Alpha Centauri also known as Rigil Kentaurus. Even though Sirius is brighter than Arcturus, Arcturus is further away from our solar system.
No Extrasolar Planets (Exoplanets) have been discovered orbiting round this planet but its not to say that that they`re aren`t or weren`t any. The star has held a position in science fiction for orbiting planets with life forms, for instance, Arcturans have been mentioned in Star Trek. where the aliens come from the fourth planet orbiting the star.
Arcturus has a spectral type of K2IIIp. This means the star is (K) orange to red coloured (III) giant. Arcturus lies at a distance of 36.71 light years away from our Sun or to put it another way, 11.04 parsecs away from the Sun.
Arcturus has an apparent magnitude of -0.05 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Arcturus has an absolute magnitude of -0.31 which is the apparent magnitude of an object if it were 32.6 light years away or 10 parsecs from Earth. Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.
The star's effective temperature is 4,336 Kelvin which is cooler than our own Sun's effective Temperature which is 5,777 Kelvin
Arcturus Radius has been calculated as being 27.16 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 18,897,927.89. km. The star's solar mass is 4.00 times that of the Sun's. The Sun's Mass is 1,989,100,000,000,000,000,000 billion kg. which to calculate using this website is too large. To give idea of size, the Sun is 99.86% the mass of the solar system.
The star is a variable type which means that it oscillates/pulsates between sizes.