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C51

IC 1613

은하 우수 (64/100)

Irregular

C51 Galaxy Cetus 관측 가능 난이도 5 Expert level - Dark skies recommended
Credit: ESO. License: CC BY 4.0. (Wikimedia Commons)
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특성

등급 9.3
각크기 18.3′ × 17.1′
위치각 50°
거리 2300000 ly
은하 유형 Irregular (I)
Irregular Galaxy [Distance: 2300000 ly]

위치 & 식별자

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

가시성

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서베이 이미지

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C51 소개

설명

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.

관측 팁

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.

역사

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.

재미있는 사실

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.

커뮤니티 사진 (1)

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

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

Skybred Mar 2, 2026