Fireworks Galaxy
NGC 6946
천체 데이터
- 카탈로그 지정명
- C12
- 유형
- Galaxy
- 별자리
- Cepheus
- 등급
- 8.9
- 적경
- 20h 34m 52.3s
- 적위
- +60° 09' 14.4"
- 거리
- 18,000,000 광년
- 각크기
- 11
서베이 이미지
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Fireworks Galaxy 소개
설명
The Fireworks Galaxy (NGC 6946) is a face-on spiral galaxy straddling the border of Cepheus and Cygnus, about 25 million light-years away. It is notable for its prolific supernova production.
관측 팁
Visible as a round, diffuse glow in a 4-inch telescope. Larger scopes reveal a brighter nucleus with faint spiral arm hints. Low surface brightness means dark skies are important. Best in summer and autumn evenings.
역사
Discovered by William Herschel on September 9, 1798. Ten supernovae have been observed in this galaxy since 1917, more than in any other known galaxy.
재미있는 사실
With 10 observed supernovae (1917A, 1939C, 1948B, 1968D, 1969P, 1980K, 2002hh, 2004et, 2008S, 2017eaw), NGC 6946 has earned its "Fireworks" nickname. The average galaxy produces only 1-2 supernovae per century.
커뮤니티 사진 (1)
Credit: Andreigusan. License: CC0. (Wikimedia Commons)
Skybred Mar 2, 2026