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C30

NGC 7331

Galáxia Excelente (69/100)

Barred Spiral

C30 Galaxy Pegasus Visível Nível 4 Large telescope (10"+) - Dark skies recommended
Credit: Ngc1535. License: CC BY 3.0. (Wikimedia Commons)
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Propriedades

Magnitude 9.5
Tamanho Angular 9.3′ × 3.8′
Ângulo de Posição 170°
Distância 49000000 ly
Tipo de Galáxia Barred Spiral (Sbc)
Spiral Galaxy [Distance: 49000000 ly]

Posição e Identificadores

RA 22h 37m 04.1s
Dec +34° 25' 01.2"
Constelação Pegasus
Catálogo C30

Visibilidade

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Imagem de Levantamento

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Sobre C30

Descrição

NGC 7331 is a bright spiral galaxy in Pegasus, about 40 million light-years away. Often called the Milky Way's twin, it is a large, inclined spiral with a prominent bulge and well-defined dust lanes. It appears to lead a small group of background galaxies known as the Deer Lick Group.

Dicas de Observação

One of the brighter non-Messier galaxies, visible in a 4-inch telescope as an elongated glow with a bright core. An 8-inch scope shows the disk and hints of dust lanes. The four smaller background galaxies require 10 inches or more. Best in autumn.

História

Discovered by William Herschel on September 5, 1784. The group of background galaxies (NGC 7335, 7336, 7337, 7340) was once thought to be physically associated but lies 10 times more distant.

Curiosidades

NGC 7331 rotates in the opposite direction from what its spiral arm winding would suggest, a phenomenon called "backwards spinning" that remains unexplained.

Fotos da Comunidade (1)

Credit: Ngc1535. License: CC BY 3.0. (Wikimedia Commons)

Credit: Ngc1535. License: CC BY 3.0. (Wikimedia Commons)

Skybred Mar 2, 2026