Virgo

[shi n securinzuo]
Astronomical constellations
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synonymVirgo(Virgo in astronomy) generally refers to the constellation Virgo
This entry was contributed and edited by the Nanjing Association of Astronomy Enthusiasts.
Virgo ( Latin Virgo, Astronomical symbol ♍), with an area of 1294.43 square degrees, accounting for 3.318% of the total area of the sky, ranking second in the area of 88 constellations Hydra And the biggest Ecliptic sign . There are 58 stars in Virgo brighter than magnitude 5.5, lucida for althea (Alpha Virgo star), Apparent magnitude It is 0.98. Every year at midnight on April 11, the center of Virgo passes through the upper meridian. Since modern times Autumnal equinox Located in the constellation Virgo. [1]
Chinese name
Virgo
Foreign name
Virgo
alias
Virgo
categorize
Star sign
Apparent magnitude
0.98
Right ascension
13 h
Latin abbreviation
Vir
Area product
1294.43 km²
Area ranking
2nd place
Bright star number
3
lucida
althea (α Vir)
Meteor shower
The Virgo meteor shower μ Virgo meteor shower
Adjacent constellations
Posterior occlusion , Leo , Colossus , Corvus , Hydra , Libra , Serpens , Bootes , Capricornus
Optimum observation time
May
Best observed latitude
Between +80° and −80°
The apparent magnitude of the brightest star
0.98
Fully visible region
67°N-75°S
interzone
8.23 ~ 9.22

Star position

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Virgo
Virgo east connection Serpens (head) and Libra , lean to the west Leo , Colossus and Corvus , our south neighbor Hydra , our Northern neighbor Bootes and Posterior occlusion .
In addition to the ecliptic line passing through Virgo, the celestial equator also passes through the north-central part of Virgo, so that Virgo is simultaneously covered Celestial equator And the ecliptic line.
From the 18th century BC to the 4th century BC, the autumnal equinox was in Libra, after which it entered the constellation Virgo. This will enter the neighboring Leo around 2440.

Constellations major stars

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Bayer nomenclature Flamsteed nomenclature Other names Chinese star officer Apparent magnitude remark
Alpha Virgo Virgo 67 Spica althea 0.98 The brightest star in Virgo;Beta Cephei variable star
Beta Virgo Virgo 5 Zavijah [2] Right hand enforcement ---- The sixth brightest star in the constellation Virgo
Gamma Virgo Virgo 29 Porrima Eastern facies ---- Binary star; The second brightest star in the constellation Virgo
Virgo delta Virgo 43 Auva Eastern phase 3.39 Etc. The fifth brightest star in the constellation Virgo
Epsilon Virgo 47 Virgo Vindemiatrix Dongji General 2.85 level The third brightest star in the constellation Virgo
Zeta Virgo Virgo 79 Heze Ceraseus 3.38 etc. The fourth brightest star in the constellation Virgo
η Virgo Virgo 15 Zaniah Left hand enforcement 3.89 etc. ----
Theta Virgo 51 Virgo ---- Parallel road 1 4.38 Etc. Cluster star
Virgo ι Virgo 99 Syrma [2] roselle 4.07 etc. ----
κb Virgo Virgo 98 Kang Kangshuichi 4.18 etc. ----
Lambda Virgo Virgo 100 Khambalia Erythrina 4.52 ----
μ Virgo 107 Virgo Rijl al Awwa The overtones have always increased in number seven Level 3.87 ----
Virgo ν Virgo 3 ---- Inner screen 2 4.04 etc. ----
ξ Virgo Virgo 2 ---- Inner screen 1 4.84 ----
Virgo ο Virgo 9 ---- Inner screen 4 4.12 Etc. ----
PI Virgo Virgo 8 ---- Inner screen 3 4.65 ----
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[3]
  • Cerueii (alpha Virgo)
althea (Alpha Virgo) is a pair Spectral type It's B1V [4] Blue close binary star. Larger of these Primary star The mass is 11.43±1.15 times Solar mass The radius is 7.47±0.54 times Solar radius The luminosity is about 20,500 times Solar luminosity . The entire system is about 250 light years from Earth. Of Kakujuichi Apparent magnitude About 0.98 magnitude, Absolute magnitude With a magnitude of -3.55, they are among the top 20 brightest stars in the night sky. [5]
  • Right hand law (beta Virgo)
Right hand enforcement Beta Virgo is a star of spectral type F9 V with a mass of 1.25 solar masses, a radius of about 1.68 solar radii, and a luminosity of about 3.57 solar luminosity, located about 35.7 light-years from Earth with an apparent magnitude of about 3.6. [6]
  • Eastern facies (gamma Virgo)
Eastern facies (Virgo gamma) is a pair made up of two almost identical stars Main sequence star constituent Binary star The spectral type is F0V [7] Both are 1.56 times the mass of the Sun and have a total apparent magnitude of about 2.75.
  • Ross 128
Ross 128 Located near the right branch (beta Virgo), it is a faint star Red dwarf . It has one planet, Ross 128 b, orbiting it and is thought to be in Goldilocks zone Medium.

Deep sky object

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The Virgo Galaxy Cluster

in Dongji General (ε Vir) 5° to 10° west The Virgo Galaxy Cluster , which includes Messier catalog Hit the mark M49 (ellipse), M58 (spiral), M59 (ellipse), M60 (ellipse), M61 (spiral), M84 (ellipse), M86 (ellipse), M87 (Ellipse; celebrated Radio source ) and M90 (Spiral).

M87

M87 is The Virgo Galaxy Cluster The largest of galaxy It has an apparent magnitude of 8.6 and is 60 trillion light years from Earth. redshift 0.0035). It is a large radio source, in part because of its electrons Jet stream Centered by the galaxy Supermassive black hole Out of the galaxy. Because this jet is visible at several different wavelengths, it is of great interest to astronomers hoping to observe black holes in a unique galaxy. [8] April 10, 2019, from" Event horizon Astronomers with the Event Horizon Telescope project have released images of its central black hole; This is the first direct image of a black hole with a mass of at least 7.2 billion times that of the Sun. [9] It is... Milky Way galaxy The most massive black hole in the neighborhood.

M84

M84 It is also a notable object in the Virgo Cluster of galaxies, with an apparent magnitude of 9.1 and also 60 trillion light-years from Earth (redshift 0.0035). By calculating the mass and speed of the material orbiting its center, astronomers speculate that the center is also likely a black hole. [8]

M104

M104 is also known as Straw hat galaxy , in Astronomy enthusiast It is very famous because it looks like a straw hat and gets its name. It is a Spiral galaxy It has an apparent magnitude of 8.0 and is 28 million light-years away from Earth, with some brighter ones clustered in the center Old star And the bulge. [8]

3C273

quasar 3C273, also an object in the constellation Virgo, is the first quasar to be discovered and, with an apparent magnitude of 12.9, is the optically brightest known quasar.

Meteor shower

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Virgo has several very small ones Meteor shower the radiant . among Theta Virgo meteor shower The maximum time is usually on March 20, ZHR About 1~3; Gamma Virgo meteor shower The maximum time is about April 14 or 15, and the ZHR is also less than 5. [10]

Constellation myth

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In about The 10th century BC, a section of Virgo was called The Furrow, representing the goddess Shala and her ear . althea The Latin name for alpha Virgo is Spica, meaning ear of grain, which is The Mesopotamian plains The main crop. [11] The name of Virgo is handed down from ancient times, the Latin name Virgo, abbreviated as Vir, the symbol of Virgo meaning beauty.
The astronomical image of Virgo is a beautiful goddess with wings. It can be seen that its long existence and importance. Virgo is also an angel, bringing happiness and beauty to mankind.
Early Greek legends associate Virgo with Valley God Cerys (Ceres) and the Goddess of fertility Demeter (Demeter) linked together. Be regarded as The Twelve gods of Olympus One of Hera . Earth mother Gaea To the holy garden Golden apple Gift, is ancient Greek mythology The queen of heaven, Lord of the gods The Queen of the gods, the highest goddess. Hera is considered to be the protector of marriage and women. Hera has the elegance and honor of a queen. Sitting on a golden throne, Hera is extremely beautiful. Splendid clothes Her arms were as white as lilies, and her gorgeous curls poured down from her crown. Hera rules marriage and childbirth, defends the family, and is very loyal to her love and family. Usually youth goddess Hebe Seen as the virgin of Hera, Hera herself represents the mother. There are also accounts of Iustitia, the goddess of Virgo and Virgo, or Astraya, the goddess of the stars and justice. Astraea The goddess Astraes is related to the goddess of purity, the goddess of justice, the goddess of stars, the goddess of purity, bringing light and hope, and its image is a young girl with wings, holding a torch, emitting bright light. The golden olive is the embodiment of the holy goddess Astria's love and compassion for human beings, and the possession of golden olives will have the noblest virtue. She brings light and hope to mankind. She holds in her hand a scale of justice, known as a Libra. Another Greek myth arose later Classical period Virgo was identified as Erigone, daughter of Icarius of Athens. In this version of the myth, Dionysus The father and daughter were placed on the stars to play the roles of the Fauves and the Virgo. Another figure thought to be associated with Virgo is the beautiful goddess of spring Persephone ( Persephone She is the earthly goddess of grain management, the Greek mother of the earth, she is also the brilliant goddess of spring, white arms Persephone Beauty was a blonde, and Persephone was also a fertility goddess. She was Zeus And Demeter's only daughter, Hardys She had fallen in love with this beautiful goddess, and had taken her back to the underworld, and tricked her into eating six pomegranate seeds, so that she could not return to the earth for half the year, but lived in the underworld. She and Hades had three sons. [12] At the same time, she also brings spring back to the earth, everything comes back to life, and the earth returns to light.
Virgo is a symbol of beauty and purity.