C18
NGC 185
천체 데이터
- 카탈로그 지정명
- C18
- 유형
- Galaxy
- 별자리
- Cassiopeia
- 등급
- 9.2
- 적경
- 00h 38m 57.1s
- 적위
- +48° 20' 13.2"
- 거리
- 2,300,000 광년
- 각크기
- 12
서베이 이미지
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C18 소개
설명
NGC 185 is a dwarf spheroidal galaxy in Cassiopeia, about 2.0 million light-years away. Like its companion NGC 147 (C17), it is a satellite of the Andromeda Galaxy, but unlike C17, it shows some dust and evidence of relatively recent star formation in its center.
관측 팁
Slightly brighter than its neighbor C17. Visible as a faint oval glow in a 6-inch telescope. The brighter central region helps distinguish it from the background. Can be viewed in the same session as C17, located about 1 degree apart. Best in autumn.
역사
Discovered by William Herschel on November 30, 1787. NGC 185 is notable for being one of the few dwarf elliptical/spheroidal galaxies with a detectable amount of interstellar dust and young blue stars in its nucleus.
재미있는 사실
NGC 185 contains a small active galactic nucleus powered by a modest black hole, making it one of the least luminous galaxies known to host an AGN.
커뮤니티 사진 (1)
Credit: NASA Hubble Space Telescope. License: CC BY 2.0. (Wikimedia Commons)
Skybred Mar 2, 2026