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C83

NGC 4945

은하 최고의 관측 대상 (75/100)

Barred Spiral

C83 Galaxy Centaurus 관측 가능 난이도 4 Large telescope (10"+) - Dark skies recommended
Credit: ESO. License: CC BY 4.0. (Wikimedia Commons)
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특성

등급 8.6
각크기 23.3′ × 4.0′
위치각 44°
거리 13000000 ly
은하 유형 Barred Spiral (SBc)
Spiral Galaxy [Distance: 13000000 ly]

위치 & 식별자

RA 13h 05m 27.4s
Dec -49° 28' 04.8"
별자리 Centaurus
카탈로그 C83

가시성

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서베이 이미지

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C83 소개

설명

NGC 4945 is a bright, edge-on barred spiral galaxy in Centaurus, about 11.7 million light-years away. It is one of the brightest galaxies in the Centaurus A/M83 galaxy group and hosts a Seyfert 2 active nucleus obscured by heavy dust absorption.

관측 팁

Visible as a bright, elongated streak in a 6-inch telescope. The thick dust lane makes the profile appear asymmetric. Located near Centaurus A (C77). Best from southern latitudes in spring and summer evenings.

역사

Discovered by James Dunlop on April 30, 1826 from Australia. X-ray and infrared observations have revealed the hidden active galactic nucleus behind the galaxy's dust-choked central region.

재미있는 사실

NGC 4945's central supermassive black hole is accreting matter and producing powerful water maser emission — one of the strongest extragalactic maser sources known, visible at radio wavelengths.

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