C8
NGC 559
천체 데이터
- 카탈로그 지정명
- C8
- 유형
- OpenCluster
- 별자리
- Cassiopeia
- 등급
- 9.5
- 적경
- 01h 35m 54.0s
- 적위
- +63° 17' 60.0"
- 거리
- 3,700 광년
- 각크기
- 4
서베이 이미지
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C8 소개
설명
NGC 559 is a moderately rich open cluster in Cassiopeia, about 3,700 light-years away. It contains roughly 100 stars spread across 4 arcminutes, with the brightest members at about magnitude 10.
관측 팁
Requires at least a 4-inch telescope to resolve. Located in the rich Milky Way star fields of Cassiopeia. Medium magnification (80-120x) works best. Circumpolar from northern mid-latitudes, best placed in autumn evenings.
역사
Discovered by William Herschel on November 9, 1787. It is one of many open clusters Herschel cataloged in the star-rich region of Cassiopeia.
재미있는 사실
NGC 559 is estimated to be about 200 million years old, making it a middle-aged open cluster. Studies have identified several red giant stars among its members.
커뮤니티 사진 (1)
Credit: Meli thev. License: CC BY-SA 4.0. (Wikimedia Commons)
Skybred Mar 2, 2026