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Omega Centauri

NGC 5139

구상성단 최고의 관측 대상 (95/100)
C80 GlobularCluster Centaurus 관측 가능 난이도 1 Naked eye / Binoculars - Higher magnification helpful
Credit: Chuck Ayoub. License: CC0. (Wikimedia Commons)
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특성

등급 3.9
각크기 27.0′
거리 17300 ly
Globular Cluster [Distance: 17300 ly]

위치 & 식별자

RA 13h 26m 47.3s
Dec -47° 28' 48.0"
별자리 Centaurus
카탈로그 C80

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Omega Centauri 소개

설명

Omega Centauri (NGC 5139) is the largest and brightest globular cluster in the Milky Way, located about 15,800 light-years away in Centaurus. Spanning 36 arcminutes and containing roughly 10 million stars, it is visible to the naked eye at magnitude 3.9.

관측 팁

One of the most spectacular objects in the sky. Visible to the naked eye as a fuzzy star. Binoculars show it as a large, bright, granular ball. Any telescope resolves it beautifully into a sea of stars. Best from southern latitudes in spring and summer — a must-see object.

역사

Known since antiquity. Ptolemy cataloged it as a star in 150 AD. Edmond Halley recognized its non-stellar nature in 1677. It is now believed to be the stripped core of a dwarf galaxy that was absorbed by the Milky Way.

재미있는 사실

Omega Centauri has multiple stellar populations with different ages and metallicities, unlike normal globular clusters. This is strong evidence that it is the nucleus of a dwarf galaxy consumed by the Milky Way. It may contain an intermediate-mass black hole of about 40,000 solar masses at its center.

커뮤니티 사진 (1)

Credit: Chuck Ayoub. License: CC0. (Wikimedia Commons)

Credit: Chuck Ayoub. License: CC0. (Wikimedia Commons)

Skybred Mar 2, 2026