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Barnard's Galaxy

NGC 6822

Galáxia Excelente (69/100)

Irregular

C57 Galaxy Sagittarius Visível Nível 4 Large telescope (10"+) - Dark skies recommended
Credit: ESO. License: CC BY 4.0. (Wikimedia Commons)
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Propriedades

Magnitude 8.7
Tamanho Angular 17.4′ × 16.8′
Ângulo de Posição 27°
Distância 1700000 ly
Tipo de Galáxia Irregular (IB)
Irregular Galaxy [Distance: 1700000 ly]

Posição e Identificadores

RA 19h 44m 56.4s
Dec -14° 48' 07.2"
Constelação Sagittarius
Catálogo C57

Visibilidade

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Imagem de Levantamento

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Sobre Barnard's Galaxy

Descrição

Barnard's Galaxy (NGC 6822) is a dwarf irregular galaxy in Sagittarius, about 1.6 million light-years away. It is a member of the Local Group and one of the closest galaxies beyond the Magellanic Clouds, with active star formation and numerous HII regions.

Dicas de Observação

A challenging target due to low surface brightness and low declination from northern latitudes. Requires dark skies and at least a 6-inch telescope. Appears as a faint, large, irregular glow. Best in summer when Sagittarius is highest.

História

Discovered by E.E. Barnard in 1884 using a 6-inch refractor. It was one of the first galaxies recognized as lying beyond the Milky Way when Edwin Hubble identified Cepheid variables in it in 1925.

Curiosidades

Barnard's Galaxy is one of the few galaxies discovered visually in the late 19th century rather than photographically. It contains a giant bubble of ionized hydrogen about 1,500 light-years across, one of the largest HII complexes in the Local Group.

Fotos da Comunidade (1)

Credit: ESO. License: CC BY 4.0. (Wikimedia Commons)

Credit: ESO. License: CC BY 4.0. (Wikimedia Commons)

Skybred Mar 2, 2026