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Su M49
Descrizione
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.
Consigli per l'osservazione
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.
Storia
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.'
Curiosità
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.
Foto della comunità (1)
Credit: RubinObs/NOIRLab/SLAC/NSF/DOE/AURA. License: CC BY 4.0. (Wikimedia Commons)
Skybred Feb 28, 2026