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C51

IC 1613

Galáxia Excelente (64/100)

Irregular

C51 Galaxy Cetus Visível Nível 5 Expert level - Dark skies recommended
Credit: ESO. License: CC BY 4.0. (Wikimedia Commons)
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Propriedades

Magnitude 9.3
Tamanho Angular 18.3′ × 17.1′
Ângulo de Posição 50°
Distância 2300000 ly
Tipo de Galáxia Irregular (I)
Irregular Galaxy [Distance: 2300000 ly]

Posição e Identificadores

RA 01h 04m 48.0s
Dec +02° 07' 01.2"
Constelação Cetus
Catálogo C51

Visibilidade

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Sobre C51

Descrição

IC 1613 is a dwarf irregular galaxy in Cetus, about 2.4 million light-years away. It is a member of the Local Group and one of the few galaxies that shows a blueshift, meaning it is approaching us. It has very low metallicity and active star formation.

Dicas de Observação

An extremely challenging visual target due to its very low surface brightness (about 14.2 mag/arcsec²). Requires at least a 10-inch telescope, dark skies, and averted vision. Best in autumn evenings.

História

Discovered by Max Wolf in 1906. It is important in cosmology because its low metallicity and proximity make it ideal for calibrating the Cepheid period-luminosity relation for distance measurements.

Curiosidades

IC 1613 has almost no interstellar dust, making it transparent and allowing clear views of background galaxies through it. Its low metallicity means it has undergone relatively little chemical enrichment from stellar evolution.

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