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Encyclopedia > Coma Berenices
Coma Berenices
Coma Berenices
Click for larger image
Abbreviation: Com
Genitive: Comae Berenices
Symbology: Berenice's Hair
Right ascension: 12.76 h
Declination: +21.83°
Area: 386 sq. deg. (42nd)
Main stars: 3
Bayer/Flamsteed stars: 40
Stars with known planets: 2
Bright stars: 0
Nearby stars: 2
Brightest star: β Com (4.26m)
Nearest star: β Com (30 ly)
Messier objects: 8
Meteor showers: Coma Berenicids
Bordering constellations: Canes Venatici
Ursa Major
Leo
Virgo
Boötes
Visible at latitudes between +90° and −70°
Best visible at 21:00 (9 p.m.) during the month of May

Coma Berenices (IPA: /ˈkəʊmə bɛrəˈnʌɪsiːz/, Latin: Berenice's Hair) is a traditional asterism that has since become a constellation. It is located near Leo, and was originally considered to be the tuft of hair on the end of Leo's tail. This is a celestial map of the constellation Coma Berenices, Berenices Hair. ... The genitive case is a grammatical case that indicates a relationship, primarily one of possession, between the noun in the genitive case and another noun. ... If you are looking for something or someone else named Berenice, please go here. ... A strand of human hair under magnification Hair is also the name of a musical, see respective articles for the stage production and the movie. ... Equatorial Coordinates Right ascension (abbrev. ... In astronomy, declination (abbrev. ... Here is a list of the 88 modern constellations by their area in the sky, measured in square degrees. ... Many of the brighter stars are given names which are known as Bayer designations. ... Flamsteed designations for stars are similar to Bayer designations, except that they use numbers instead of Greek letters. ... Beta Coma Berenices (β Comae Berenices / β Com) is a main sequence dwarf star in the constellation of Coma Berenices. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one Julian year. ... The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ... Leonid Meteor Shower A meteor shower, also known as a meteor storm, is a celestial event where a large number of meteors are seen within a very short period. ... Canes Venatici (Latin for Hunting dogs) is a small northern constellation that was introduced by Johannes Hevelius in the 17th century. ... This article is about the Great Bear constellation. ... Leo (IPA: , Latin: , symbol , ) is a constellation of the zodiac. ... Virgo (IPA: , Latin: , symbol , ) is a constellation of the zodiac. ... Boötes (IPA: ), a name deriving from Egypt, is one of the 88 modern constellations and was also one of the 48 constellations listed by Ptolemy. ... For information on how to read IPA transcriptions of English words see here. ... Latin was the language originally spoken in the region around Rome called Latium. ... If you are looking for something or someone else named Berenice, please go here. ... A strand of human hair under magnification Hair is also the name of a musical, see respective articles for the stage production and the movie. ... In astronomy, an asterism is a recognized pattern of stars seen in Earths sky which is neither an official constellation nor a true star cluster. ... This article or section does not cite its references or sources. ... Leo (IPA: , Latin: , symbol , ) is a constellation of the zodiac. ...

Contents

Notable features

Coma Berenices contains the North Galactic Pole, at right ascension 12h 51m 25s and declination 27° 07′ 48″ (epoch J2000.0). The anisotropy of the star density in the night sky makes the galactic coordinate system very useful for coordinating surveys, both those which require high densities of stars (at low galactic latitudes) and those which require a low density of stars (at high galactic latitudes) Many galaxies, including the Milky... Equatorial Coordinates Right ascension (abbrev. ... In astronomy, declination (abbrev. ... It has been suggested that this article or section be merged into Julian epoch. ...


The constellation is not particularly bright, having no stars brighter than fourth magnitude. β Comae Berenices is the brightest star in the constellation, at magnitude 4.26m. It is intrinsically only a slightly brighter than the Sun, which gives us an idea of how faint the Sun would appear seen from 27 light years away. Beta Coma Berenices (β Comae Berenices / β Com) is a main sequence dwarf star in the constellation of Coma Berenices. ... This article is about the astronomical object. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ... The Sun is the star at the center of the Solar System. ... To help compare different distances this page lists lengths between 1017 m (11 light years) and 1018 m (110 light years). ... A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one Julian year. ...


The second brightest star in Coma Berenices is α Comae Berenices (4.32m), also called Diadem. It is the only star in the constellation with a common name representing the gem in Berenice's crown. It is a binary star, with two components of almost equal magnitude. Because the orbital plane is so close to the Earth's line of sight, it was long suspected of being an eclipsing binary, but it now appears that the orbital tilt is 0.1° against the line of sight, so the stars do not eclipse each other as seen from Earth. Alpha Comae Berenices (α Com / α Comae Berenices) is a star in the constellation Coma Berenices (Berenices Hair). ... This article is about the astronomical phenomenon. ... The orbital plane of an object orbiting another is the geometrical plane in which the orbit is embedded. ... Animation showing how an eclipsing binary stars light intensity changes as they orbit An eclipsing binary star is a binary star in which the orbit plane of the two stars lies so nearly in the line of sight of the observer that the components undergo mutual eclipses. ...

Photograph of Coma Berenices.
Photograph of Coma Berenices.

The only other fourth magnitude star in Coma Berenices is γ Comae Berenices (4.36m). Download high resolution version (791x641, 150 KB) Wikipedia does not have an article with this exact name. ... Download high resolution version (791x641, 150 KB) Wikipedia does not have an article with this exact name. ...


Over 200 variable stars are known in Coma Berenices, although many of them are obscure. FK Comae Berenices, which varies between 8.14m and 8.33m over a period of 2.4 days, is the prototype for the FK Com class of variable stars. It is believed that the variability of FK Com stars is caused by large, cool spots on the rotating surface of the star. FS Comae Berenices is a semiregular variable that varies between 5.3m and 6.1m over a period of 58 days. R Comae Berenices is a Mira variable star that varies between 7.1m and 14.6m over a period of 363 days. Semiregular variable stars are giants or supergiants of intermediate and late spectral type showing considerable periodicity in their light changes, accompanied or sometimes interrupted by various irregularities. ... Mira variables, named after the star Mira (IPA [ˈmai. ...


Notable deep sky objects

Although Coma Berenices is not a large constellation, it contains eight Messier objects. The constellation is rich in galaxies, containing the northern part of the Virgo cluster. There are also several globular clusters to be seen. These objects can be seen with minimal obscuration from dust because the constellation is not in the direction of the galactic plane. However, because of this fact, there are few open clusters (except for the Coma Berenices Cluster, which dominates the northern part of the constellation), diffuse nebulae, or planetary nebulae. The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ... NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 17,000 parsecs in diameter and approximately 20 million parsecs distant. ... A sky field near some of the brighter galaxies in the Virgo cluster. ... The Globular Cluster M80 in the constellation Scorpius is located about 28,000 light years from the Sun and contains hundreds of thousands of stars. ... The Pleiades is one of the most famous open clusters. ... The Triangulum Emission Nebula NGC 604 lies in a spiral arm of Galaxy M33, 2. ... NGC 6543, the Cats Eye Nebula A planetary nebula is an astronomical object consisting of a glowing shell of gas and plasma formed by certain types of stars at the end of their lives. ...


Coma Berenices Cluster

Main article: Coma star cluster

The Coma Berenices Cluster does not have a Messier or an NGC designation, but it is in the Melotte catalogue of open clusters, where it is designated Melotte 111. It is a large, diffuse open cluster of stars that range between 5th and 10th magnitudes, including several of the naked eye stars in the constellation. The cluster is spread over a huge region, more than 5 degrees across, near γ Coma Berenices. The cluster has such a large apparent size because it is relatively nearby, only around 270 light years away. The Coma Cluster in Coma Berenices, designated Melotte 111 after its entry in the catalogue of deep sky objects by P. J. Melotte, is a small but nearby star cluster in our galaxy, containing about 40 stars (magnitude 5 to 10) with a common proper motion. ... A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance light travels in vacuum in one Julian year. ...


Galaxies

A large number of galaxies are visible in Coma Berenices, including seven Messier objects. The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ...


Virgo cluster of galaxies

Main article: Virgo Cluster

Coma Berenices contains the northern portion of the Virgo cluster (also known as the Coma-Virgo cluster), which is around 60 million light years away. A sky field near some of the brighter galaxies in the Virgo cluster. ...


M100 (NGC 4321) is a 9.4m spiral galaxy seen face-on. At 7 arcminutes across, it has the largest apparent size of any galaxy in the Virgo cluster. It is located about 56 million light-years away. Its diameter is over 120,000 light years, making it among the largest spiral galaxies in the Virgo cluster. Photographs reveal a brilliant core, two prominent spiral arms and an array of secodary ones, as well as several dust lanes. Spiral Galaxy M100 (also known as Messier Object 100, Messier 100, M100 or NGC 4321) is a spiral galaxy in the Coma Berenices constellation. ... A spiral galaxy is a type of galaxy in the Hubble sequence which is characterized by the following physical properties: Spiral Galaxy M74 presents a face-on view of its spiral arms. ...


M85 (NGC 4382) is a lenticular galaxy that is the northernmost outlier of the Virgo cluster. It is one of the brighter members of the cluster. M98 (NGC 4192) is a bright, elongated spiral that is seen nearly edge-on. It has a small nucleus and faint but vast spiral arms. M99 (NGC 4254), about 1.5° southeast of M98, is a bright, round spiral seen face-on. R.H. Allen called it the "Pinwheel nebula", although this name is more often applied to the Triangulum Galaxy. The Messier 85 (also known as M85 or NGC 4382) is a lenticular galaxy in the Coma Berenices constellation. ... The Spindle Galaxy (NGC 5866), a lenticular galaxy in the Draco constellation. ... The Spiral Galaxy M98 (also known as Messier Object 98, Messier 98, M98, or NGC 4192) is a spiral galaxy in the Coma Berenices constellation. ... Messier 99 (also kown as NGC 4254 or M99 for short, nicknamed Coma Pinwheel Galaxy) is a spiral galaxy approximatly 60 million light-years away in the constellation Coma Berenices. ... The Triangulum Galaxy (also known as Messier 33 or NGC 598) is a spiral galaxy about 3. ...


M88 (NGC 4501) is a multi-arm spiral galaxy, seen about 30° from edge-on. Messier 88 (also known as NGC 4501 or M88 for short) is a spiral galaxy about 50 million light-years away in the constellation Coma Berenices, yet its in the Virgo cluster. ...


M91 (NGC 4548) is a barred spiral galaxy. Spiral Galaxy M91. ... NGC 1300, viewed nearly face-on. ...


Coma cluster of galaxies

Main article: Coma Cluster

The Coma cluster of galaxies is to the north of the Virgo cluster. It lies much further away, however, around 230 to 300 million light years away. The cluster is quite large, containing 1,000 large galaxies and possibly up to 30,000 smaller ones. A survey by Fritz Zwicky in 1957 identified 29,951 galaxies in the area that are brighter than 19.0m. While some of these may be distant background objects, the total number of galaxies in the cluster is quite large. // Coma galaxy cluster The Coma Cluster is an huge galaxy cluster and the prototypical rich cluster with over a thousand member galaxies known. ... Fritz Zwicky (February 14, 1898 – February 8, 1974) was an American-based Swiss astronomer. ...


Due to the great distance to the cluster, most of the galaxies are only visible in large telescopes. The brightest members are NGC 4889 and NGC 4874, both of which are of thirteenth magnitude, with most of the other members being of fifteenth magnitude or dimmer. NGC 4889 is a giant elliptical galaxy.


Other galaxies

M64, the Black Eye Galaxy
M64, the Black Eye Galaxy

M64 (NGC 4826) is known as the Black Eye Galaxy because of its prominent dark dust lane in front of the galaxy's bright nucleus. It is relatively nearby, at around 17 million light years away from Earth. Recent studies have revealed that the interstellar gas in the outer regions of the galaxy rotates in the opposite direction from that in the inner regions, leading astronomers to believe that at least one satellite galaxy had collided with it less than a billion years ago. Download high resolution version (897x1065, 773 KB)This image of M64 was taken with Hubbles Wide Field Planetary Camera 2 (WFPC2). ... Download high resolution version (897x1065, 773 KB)This image of M64 was taken with Hubbles Wide Field Planetary Camera 2 (WFPC2). ... Messier Object 64, the Black Eye Galaxy. ...


NGC 4565 is a spiral galaxy that is seen edge-on, and is called the "Needle Galaxy" for that reason. With an apparent length of 16 arcminutes, it has the largest apparent size of any galaxy seen edgewise from Earth. It appears quite thin and has a dark dust lane. NGC 4565 is an edge-on spiral galaxy in Coma Berenices. ...


Quasars

Quasar PG1247+26° is the brightest quasar visible in Coma Berenices. As well, W Com was originally identified as a variable star and so given a variable star designation, but later discovered to be a BL Lacertae object. It is normally around magnitude 16.5m, but has been known to reach 12th magnitude. Artists impression of quasar GB1508 A quasar (contraction of QUASi-stellAR radio source) is an astronomical source of electromagnetic energy, including light, which shows a very high redshift. ... BL Lacertae is a highly variable, extragalactic AGN (Active Galactic Nuclei or Active galaxy) originally thought to be an irregular variable star in our own galaxy and so was given a variable star designation. ...


Globular clusters

M53 (NGC 5024) is a globular cluster that was discovered by Bode in 1775 and independently by Charles Messier in February 1777. Its brightness is 7.7m, making it visible in binoculars. It is around 65,000 light years away and its total luminosity is around 200,000 times that of the Sun. Only 1° away is NGC 5053, a globular cluster that is sparser and has a less dense nucleus of stars. Its total luminosity is around 16,000 suns, which is one of the lowest luminosities of any globular cluster. It was discovered by Sir William Herschel in 1784. It is around magnitude 9.9m. NGC 4147 is a somewhat dimmer (magnitude 10.2m) globular cluster with a much smaller apparent size. Globular Cluster M53 (also known as Messier Object 53, Messier 53, M53, or NGC 5024) is a globular cluster in the Coma Berenices constellation. ... Johann Elert Bode Johann Elert Bode (January 19, 1747 – November 23, 1826) was a German astronomer known for his contribution to the Titius-Bode law and his works to determine the orbit of Uranus, for which he also suggested the name. ... Charles Messier Charles Messier (June 26, 1730 – April 12, 1817) was a French astronomer who in 1774 published a catalogue of 45 deep sky objects such as nebulae and star clusters. ... Sir Wilhelm Friedrich Herschel (November 15, 1738 Hanover - August 25, 1822 Windsor) was a German-born astronomer and composer who became famous for discovering the planet Uranus, and made many other astronomical discoveries. ...


History and mythology

Coma Berenices has been known as a distinct asterism since ancient Greek times. Eratosthenes referred to it as both "Ariadne's Hair" and "Berenice's Hair". Ptolemy referred to it as "the lock" (of hair); however, he did not list it as one of his 48 constellations, considering it as part of Leo. For many years, Coma Berenices was considered usually as the tuft in Leo's tail, or sometimes as part of Virgo. Note: This article contains special characters. ... Eratosthenes (Greek ; 276 BC - 194 BC) was a Greek mathematician, geographer and astronomer. ... Drinking scene with Dionysus and Ariadne on his lap. ... A medieval artists rendition of Claudius Ptolemaeus Claudius Ptolemaeus (Greek: ; c. ... Virgo (IPA: , Latin: , symbol , ) is a constellation of the zodiac. ...


During the 16th century, a few maps that were made of the sky pictured two new constellations, including Coma Berenices. Tycho Brahe, who is usually given credit for the creation of the constellation, listed it as a distinct constellation in his star catalogue of 1602, and it appeared in Johann Bayer's Uranometria of 1603. Tycho Brahe Monument of Tycho Brahe and Johannes Kepler in Prague Tycho Brahe, born Tyge Ottesen Brahe (December 14, 1546 – October 24, 1601), was a Danish nobleman from the region of Scania (in modern-day Sweden), best known today as an early astronomer, though in his lifetime he was also... This page is about the year. ... Johann Bayer (1572 – March 7, 1625) was a German astronomer. ... Uranometrias engraving of the constellation Orion, courtesy of the US Naval Observatory Library Uranometria is the short title of a star atlas produced by Johann Bayer. ... King James I of England/VII of Scotland, the first monarch to rule the Kingdoms of England and Scotland at the same time Events March - Samuel de Champlain, French explorer, sails to Canada March 24 - Elizabeth I of England dies and is succeeded by her cousin King James I of...

Queen Berenice II of Egypt
Queen Berenice II of Egypt

Even though this constellation is a modern constellation, it is associated with a charming legend. It is one of the few constellations (with Scutum) to owe its name to a historical figure, in this case Queen Berenice II of Egypt, wife of Ptolemy III Euergetes (fl. 246 BC221 BC), the king under whom Alexandria became an important cultural center. Image File history File linksMetadata Size of this preview: 392 × 599 pixel Image in higher resolution (1363 × 2082 pixel, file size: 1. ... Image File history File linksMetadata Size of this preview: 392 × 599 pixel Image in higher resolution (1363 × 2082 pixel, file size: 1. ... Scutum (Latin for shield) is a small constellation. ... If you are looking for something or someone else named Berenice, please go here. ... Ptolemy III Euergetes I, (Ptolemaeus III) (Evergetes, Euergetes) (reigned 246 BC-222 BC). ... Centuries: 4th century BC - 3rd century BC - 2nd century BC Decades: 290s BC 280s BC 270s BC 260s BC 250s BC - 240s BC - 230s BC 220s BC 210s BC 200s BC 190s BC Years: 251 BC 250 BC 249 BC 248 BC 247 BC - 246 BC - 245 BC 244 BC... Centuries: 4th century BC - 3rd century BC - 2nd century BC Decades: 270s BC 260s BC 250s BC 240s BC 230s BC - 220s BC - 210s BC 200s BC 190s BC 180s BC 170s BC Years: 226 BC 225 BC 224 BC 223 BC 222 BC - 221 BC - 220 BC 219 BC... ---- Alexandria (Greek: , Coptic: , Arabic: , Egyptian Arabic: Iskindireyya), (population of 3. ...


Circa 243 BC, the king undertook a dangerous expedition against the Syrians, who had murdered his sister. Berenice swore to the goddess Aphrodite to sacrifice her famous long hair, of which she was extremely proud, if her husband returned safely. He did, and she had her hair cut and placed it in the goddess' temple. Centuries: 4th century BC - 3rd century BC - 2nd century BC Decades: 290s BC 280s BC 270s BC 260s BC 250s BC - 240s BC - 230s BC 220s BC 210s BC 200s BC 190s BC Years: 248 BC 247 BC 246 BC 245 BC 244 BC - 243 BC - 242 BC 241 BC... The Birth of Venus, (detail) by Sandro Botticelli, 1485 Aphrodite (Greek: Ἀφροδίτη, pronounced in English as and in Ancient Greek as ) was the Greek goddess of love, lust, beauty, and sexuality. ...


By the next morning the hair had disappeared. To appease the furious king and queen (and save the lives of the temple priests), the court astronomer, Conon, announced that the offering had so pleased the goddess, that she had placed it in the sky. He indicated a cluster of stars that at the time were identified as Leo's tail, but which have since been called Berenice's Hair. (Cf. Gaius Julius Hyginus, Astronomica 2.24) Leo (IPA: , Latin: , symbol , ) is a constellation of the zodiac. ... Gaius Julius Hyginus, (c. ...


See also

This is the list of notable stars in the constellation Coma Berenices, sorted by decreasing brightness. ...

References

  • Burnham, Robert Jr. (1966, 1978). Burnham's Celestial Handbook: An Observer's Guide to the Universe Beyond the Solar System, v.2. General Publishing Company, Ltd., Toronto. ISBN 0-486-23567-X. 
  • The Deep Photographic Guide to the Constellations: Coma Berenices
The 88 modern Constellations
Andromeda • Antlia • Apus • Aquarius • Aquila • Ara • Aries • Auriga • Boötes • Caelum • Camelopardalis • Cancer • Canes Venatici • Canis Major • Canis Minor • Capricornus • Carina • Cassiopeia • Centaurus • Cepheus • Cetus • Chamaeleon • Circinus • Columba • Coma Berenices • Corona Australis • Corona Borealis • Corvus • Crater • Crux • Cygnus • Delphinus • Dorado • Draco • Equuleus • Eridanus • Fornax • Gemini • Grus • Hercules • Horologium • Hydra • Hydrus • Indus • Lacerta • Leo • Leo Minor • Lepus • Libra • Lupus • Lynx • Lyra • Mensa • Microscopium • Monoceros • Musca • Norma • Octans • Ophiuchus • Orion • Pavo • Pegasus • Perseus • Phoenix • Pictor • Pisces • Piscis Austrinus • Puppis • Pyxis • Reticulum • Sagitta • Sagittarius • Scorpius • Sculptor • Scutum • Serpens • Sextans • Taurus • Telescopium • Triangulum • Triangulum Australe • Tucana • Ursa Major • Ursa Minor • Vela • Virgo • Volans • Vulpecula
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Coma Berenices

  Results from FactBites:
 
Coma Berenices - Wikipedia, the free encyclopedia (1546 words)
FK Comae Berenices, which varies between magnitudes 8.14m and 8.33m over a period of 2.4 days, is the prototype for the FK Comae class of variable stars.
The Coma Berenices Cluster does not have a Messier or an NGC designation, but it is in the Melotte catalogue of open clusters, where it is designated Melotte 111 (Mel 111).
The Coma cluster of galaxies is to the north of the Virgo cluster.
  More results at FactBites »

 
 

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