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Encyclopedia > Rigel
Rigel

Location of Rigel in the constellation of Orion.
Observation data
Epoch J2000
Constellation Orion
Right ascension 05h 14m 32.30s
Declination −08° 12' 06"
Apparent magnitude (V) 0.12/8.44
Characteristics
Spectral type B8 Ia
B-V color index −0.03
U-B color index −0.66
Variable type Slightly irregular
Astrometry
Radial velocity (Rv) 20.7 km/s km/s
Proper motion (μ) RA: 1.87 mas/yr
Dec.: −0.56 mas/yr
Parallax (π) 4.22 ± 0.81 mas
Distance approx. 800 ly
(approx. 240 pc)
Absolute magnitude (MV) −6.7
Details
Mass 17 M
Radius 70 R
Luminosity 40,000–66,000 L
Temperature 11,000 K
Metallicity
Rotation
Age years
Other designations
β Orionis, 19 Ori, Algebar; Elgebar, HD 34085, HR 1713, HIP 24436, SAO 131907

Rigel (pronounced /'raɪ.ʤəl/) (β Orionis) is the brightest star in the constellation Orion and the seventh brightest star in the sky, with visual magnitude 0.12. Although it has the Bayer designation "beta", it is almost always brighter than Alpha Orionis (Betelgeuse). It also has the alternative traditional names Algebar or Elgebar, but these are almost never used. This is a celestial map of the constellation Orion the Hunter. ... In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... Orion is a remarkable constellation, visible from most places on the globe at one time or another during the year. ... Orion, a constellation often referred to as The Hunter, is a prominent constellation, perhaps the best-known in the sky. ... Right ascension (RA; symbol α: Greek letter alpha) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... In astronomy, color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. ... In astronomy, color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. ... Most stars are of almost constant luminosity. ... This article does not cite its references or sources. ... Radial velocity is the velocity of an object in the direction of the line of sight. ... kilometre per second is an SI derived unit of both speed (scalar) and velocity (vector), signified by the symbol km/s or km s-1. ... The proper motion of a star is the motion of the position of the star in the sky (the change in direction in which we see it, as opposed to the radial velocity) after eliminating the improper motions of the stars, which affect their measured coordinates but are not real... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... Parallax (Greek: παραλλαγή (parallagé) = alteration) is the change of angular position of two stationary points relative to each other as seen by an observer, due to the motion of an observer. ... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... Distance is a numerical description of how far apart things lie. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... Stellar parallax motion The parsec (symbol pc) is a unit of length used in astronomy. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standard luminosity distance away from us (in the absence of interstellar extinction!). It allows the overall brightnesses of objects to be compared without regard to distance. ... Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... In astronomy, the solar mass is a unit of mass used to express the mass of stars and larger objects such as galaxies. ... In classical geometry, a radius of a circle or sphere is any line segment from its center to its boundary. ... In astronomy, the solar radius is a unit of length used to express the size of stars and larger objects such as galaxies. ... Luminosity has different meanings in several different fields of science. ... The solar luminosity, , is a unit of luminosity (power emitted in the form of photons) conventionally used by astronomers to give the luminosities of stars. ... Temperature is also the name of a song by Sean Paul. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ... In astronomy, the metallicity of an object is the proportion of its matter made up of chemical elements other than hydrogen and helium. ... Rotation of a plane, seen as the rotation of the terrain relative to the plane (exposure time 1. ... The Pleiades, an open cluster in the constellation of Taurus A star is a massive, compact body of plasma in outer space that is currently producing or has produced energy through nuclear fusion. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... In astronomy, many stars are referred to simply by catalogue numbers. ... The Henry Draper Catalogue is an astronomy catalogue with astrometric and spectroscopic data about more than 225,000 stars. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... Orion, a constellation often referred to as The Hunter, is a prominent constellation, perhaps the best-known in the sky. ... Bright stars can be bright because they produce more light, because they are closer to us, or both. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... Many of the brighter stars are given names which are known as Bayer designations. ... Betelgeuse (Alpha (α) Orionis) is a semiregular variable star located 427 light-years away [1]. It is the second brightest star in the constellation Orion, and the tenth brightest star in the night sky. ...


The star's name comes from its location at the "left foot" of Orion. It is a contraction of "Rijl Jauza al-Yusra", this being Arabic for "left foot of the Central One". Another Arabic name is الرجل الجبار ar-rijl al-jabbār, "the foot of the great one" (giant, conqueror, etc.), which is also the source of the variant name Algebar. The Arabic language (Arabic: ‎ transliterated: ), or simply Arabic (Arabic: ‎ transliterated: ), is the largest member of the Semitic branch of the Afro-Asiatic language family (classification: South Central Semitic) and is closely related to Hebrew and Aramaic. ...


The distance to Rigel from our star system is somewhere between 700 and 900 light years; Hipparcos' best guess is 773 light years (237 parsecs), but that far out the range of error is quite large. Rigel is a B8 Ia supergiant, and shines with approximately 40,000 times the luminosity of the Sun. It is far and away the most luminous star in our local region of the Milky Way; the nearest more powerful star is Deneb, as much as 3300 light years (1000 parsecs) down the Orion Arm. A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... Hipparcos (for High Precision Parallax Collecting Satellite) was an astrometry mission of the European Space Agency (ESA) dedicated to the measurement of stellar parallax and the proper motions of stars. ... Stellar parallax motion The parsec (symbol pc) is a unit of length used in astronomy. ... Supergiants are the most massive stars. ... Luminosity has different meanings in several different fields of science. ... The Sun is the star at the center of our solar system. ... Note: This article contains special characters. ... Deneb (α Cyg / α Cygni / Alpha Cygni) is the brightest star in the constellation Cygnus and one of the brightest stars in the night sky, with apparent magnitude 1. ... Observed structure of the Milky Ways spiral arms The Orion Arm or Local Arm (labeled 0) is a minor, spiral arm of the Milky Way galaxy. ...


As it is so bright, and is moving through a region of nebulosity, it should come as no surprise to learn that Rigel lights up several dust clouds in its general vicinity. The most notable is the Witch Head Nebula. Rigel is also associated with the Orion Nebula, which—while more or less along the same line of sight as the star—is about twice as far away from Earth. Despite the difference in distance, projecting Rigel's path through space for its expected age brings it close to the nebula. As a result, Rigel is sometimes classified as an outlying member of the Orion OB1 Association, along with many of the other bright stars in that region of the sky; more commonly it is considered a member of the Taurus-Orion R1 Association, and the OB1 association is reserved for stars closer to the nebula and more recently formed. The Witch Head Nebula (also known as IC 2118) is named after its shape, as can be seen seen on the right. ... The entire Orion Nebula in visible light Optical images reveal clouds of gas and dust in the Orion Nebula; an infrared image (right) reveals the new stars shining within. ...


Rigel is a triple star. The main star is orbited by a binary system, Rigel B and C, which orbit one another closely at 28 AU and in turn orbit around Rigel as a unit, at a distance of about 2000 AU. The astronomical unit (AU or au or a. ...


It is also variable, in a slight, irregular way common to supergiants. The range of variability is from 0.03 to 0.3 of a magnitude, over an average of 25 days. A fourth star in the system is sometimes proposed, but it is generally considered that this is a misinterpretation of the main star's variability, which may be caused by physical pulsation of the surface.

Contents


Rigel B

Rigel B
Observation data
Epoch J2000.0
Constellation Orion
Right ascension 05h 14m 32.30s
Declination -08° 12' 06"
Apparent magnitude (V) 6.8
Distance 773 ly
(237 pc)
Spectral type B9V
Other designations
 

Rigel B is a 6th magnitude star in a 28-au binary with Rigel C at about 2000 au from Rigel A. It has a mass of 2.5 suns.
In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... The J2000. ... Orion is a remarkable constellation, visible from most places on the globe at one time or another during the year. ... Orion, a constellation often referred to as The Hunter, is a prominent constellation, perhaps the best-known in the sky. ... Right ascension (RA; symbol α: Greek letter alpha) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... Distance is a numerical description of how far apart things lie. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... Stellar parallax motion The parsec (symbol pc) is a unit of length used in astronomy. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... In astronomy, many stars are referred to simply by catalogue numbers. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... The Pleiades, an open cluster in the constellation of Taurus A star is a massive, compact body of plasma in outer space that is currently producing or has produced energy through nuclear fusion. ... The astronomical unit (AU or au or a. ... Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... The Sun is the star at the center of our solar system. ...


Rigel C

Rigel C
Observation data
Epoch J2000.0
Constellation Orion
Right ascension 05h 14m 32.30s
Declination -08° 12' 06"
Apparent magnitude (V) 6.8
Distance 773 ly
(237 pc)
Spectral type B9V
Other designations
 

Rigel C is a 6th magnitude star in a 28-au binary with Rigel B at about 2000 au from Rigel A. It has a mass of 1.9 suns.
In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... The J2000. ... Orion is a remarkable constellation, visible from most places on the globe at one time or another during the year. ... Orion, a constellation often referred to as The Hunter, is a prominent constellation, perhaps the best-known in the sky. ... Right ascension (RA; symbol α: Greek letter alpha) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... Distance is a numerical description of how far apart things lie. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... Stellar parallax motion The parsec (symbol pc) is a unit of length used in astronomy. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... In astronomy, many stars are referred to simply by catalogue numbers. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... The Pleiades, an open cluster in the constellation of Taurus A star is a massive, compact body of plasma in outer space that is currently producing or has produced energy through nuclear fusion. ... The astronomical unit (AU or au or a. ... Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... The Sun is the star at the center of our solar system. ...


Rigel in fiction

In the Star Trek Universe, Rigel is orbited by at least twelve planets, many of which have been colonized by the Federation: Star Trek is an American science-fiction franchise spanning six unique television series and ten feature films, in addition to hundreds of novels, computer and video games, fan stories, and other works of fiction. ... A map displaying todays federations. ...

  • Rigel III was mentioned in TNG episode "All Good Things...".
  • Rigel IV was mentioned in the TOS episode "Wolf in the Fold".
  • Rigel V - mentioned in TOS episode "Journey to Babel".
  • Rigel VII - mentioned in TOS episode "The Cage", home to a race of humanoid barbarians who are not allied with the Federation, at least not as of the time of the episode.
  • Rigel X - mentioned in Enterprise episode "Broken Bow".
  • Rigel XII is home to a dilithium mining colony. It was featured in the TOS episode "Mudd's Women" where Mudd strikes a deal with the lonely miners to trade his women for dilithium.

It is unclear which, if any, of these planets is home to the Rigellians, a reptilian race seen in Star Trek: The Motion Picture. All Good Things. ... Wolf in the Fold is a second season episode of Star Trek: The Original Series. ... Journey to Babel is an episode of Star Trek: The Original Series. ... Rigel VII, is a fictional planet featured in the Star Trek universe created by Gene Roddenberry. ... The Cage is the original pilot episode of the original Star Trek science fiction series and resulting franchise. ... Broken Bow is the pilot episode (episode number 001 (Paramount Pictures, n. ... Mudds Women is an episode of Star Trek: The Original Series first broadcast October 13, 1966 and repeated May 4, 1967. ... Star Trek: The Motion Picture (Paramount Pictures, 1979; see also 1979 in film) is the first feature film based on the popular Star Trek science fiction television series and is released on Friday, December 7. ...


In the universe of Marvel Comics, the Rigellians (short large-headed humanoids) are rulers of the largest and most powerful interplanetary empire in the Milky Way Galaxy. The thunder god Thor has frequently become involved in their activities. Marvel Comics is an American comic book line published by Marvel Entertainment, Inc. ... The Milky Way (a translation of the Latin Via Lactea, in turn derived from the Greek Galaxia Kuklos; or simply the Galaxy) is a barred spiral galaxy in the Local Group, and has special significance to humanity as the location of the solar system, which is located near the Orion... Thor carries his hammer and wears his belt of strength (MS SÁM 66, 18th century). ...


In the Simpsons universe, Rigel 7 is the home of Kang and Kodos. The Simpsons. ... Though the The Simpsons is itself a fictional show of fictional characters, there are also several characters within the shows universe who are fictional to the Simpsons characters themselves (see show-within-a-show). ...


Rigel was also posited as the home system of various aliens in some science fiction short stories of the 1940s and 1950s. Science fiction is a form of speculative fiction principally dealing with the impact of imagined science and technology, or both, upon society and persons as individuals. ...


In Jack Vance's Demon Princes novels, Rigel is the parent star to a system of twenty-six habitable planets, the Rigel Concourse. Jack Vance John Holbrook Vance (b. ... The Demon Princes is a five-book series of science fiction novels by Jack Vance, which cumulatively relate the story of one Kirth Gersen as he exacts his revenge on five notorious criminals, collectively known as the Demon Princes, who carried his village off into slavery during his childhood. ... In Jack Vances Demon Princes novels, the Rigel Concourse is a system of habitable planets orbiting Rigel. ...


In his song "Sept merveilles et un oiseau vert" french-speaking singer Higginwood refers to Rigel aboard the Titanic. This Newfoundland was first officer Murdoch's dog.


External links


  Results from FactBites:
 
rigel (328 words)
Though Rigel is Orion's Beta star, it appears to us somewhat brighter than the Alpha star, Betelgeuse, perhaps suggesting that Betelgeuse was somewhat brighter in times past.
Rigel is accompanied by a fairly bright, seventh magnitude companion nine seconds of arc away.
Rigel is a part of a large association whose stars are related by birth.
Rigel - Wikipedia, the free encyclopedia (767 words)
Rigel (pronounced /'raɪ.ʤəl/) (β Orionis) is the brightest star in the constellation Orion and the seventh brightest star in the sky, with visual magnitude 0.12.
Rigel B is a 6th magnitude star in a 28-au binary with Rigel C at about 2000 au from Rigel A. It has a mass of 2.5 suns.
Rigel C is a 6th magnitude star in a 28-au binary with Rigel B at about 2000 au from Rigel A. It has a mass of 1.9 suns.
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