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M49

NGC 4472

銀河 優秀 (64/100)

Elliptical

M49 Galaxy Virgo 可視 レベル 3 Medium telescope (6-8") - Dark skies recommended
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物性

等級 8.4
角度サイズ 10.2′ × 8.4′
位置角 156°
距離 56000000 ly
銀河タイプ Elliptical (E1)
Galaxy [Distance: 56000000 ly]

位置と識別子

RA 12h 29m 46.7s
Dec +08° 00' 02.0"
星座 Virgo
カタログ M49

可視性

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M49について

説明

M49 is a giant elliptical galaxy in Virgo, about 56 million light-years from Earth. It is the brightest member of the Virgo Cluster and one of the brightest galaxies in the sky. M49 contains an estimated 200 billion stars and spans about 160,000 light-years across. It harbors a supermassive black hole of about 565 million solar masses.

観測のコツ

Located in the southern part of the Virgo Cluster, about 4 degrees south of the main chain of Virgo galaxies. In a telescope it appears as a bright, featureless oval glow with a strongly concentrated center. Similar in appearance to many other Virgo ellipticals, which can make identification tricky without a good chart. An 8-inch telescope shows the bright core surrounded by a smooth halo. Best observed from March through June.

歴史

Discovered by Charles Messier on February 19, 1771 — it was the first Virgo Cluster galaxy discovered. Its elliptical nature was not understood until the 20th century; Messier described it simply as a 'nebula without stars.'

豆知識

M49 was the first galaxy in the Virgo Cluster to be discovered. It contains nearly 6,000 globular clusters — about 30 times more than the Milky Way. The galaxy has a system of ultra-compact dwarfs orbiting it, which may be the remnant cores of smaller galaxies that were tidally stripped during mergers.

コミュニティ写真 (1)

Credit: RubinObs/NOIRLab/SLAC/NSF/DOE/AURA. License: CC BY 4.0. (Wikimedia Commons)

Credit: RubinObs/NOIRLab/SLAC/NSF/DOE/AURA. License: CC BY 4.0. (Wikimedia Commons)

Skybred Feb 28, 2026