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C42

NGC 7006

구상성단 보통 (39/100)
C42 GlobularCluster Delphinus 관측 가능 난이도 2 Small telescope (4") - Higher magnification helpful
Credit: NASA Hubble. License: CC BY 2.0. (Wikimedia Commons)
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특성

등급 10.6
각크기 4.2′
거리 135000 ly
Globular Cluster [Distance: 135000 ly]

위치 & 식별자

RA 21h 01m 29.3s
Dec +16° 11' 13.2"
별자리 Delphinus
카탈로그 C42

가시성

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C42 소개

설명

NGC 7006 is a globular cluster in Delphinus, about 135,000 light-years from Earth. It is one of the most distant globular clusters in the Milky Way's halo, lying well beyond the main body of the galaxy.

관측 팁

A small, faint, unresolved glow in an 8-inch telescope. Appears stellar at low power. It cannot be resolved into individual stars with amateur telescopes due to its great distance. Best in summer and autumn evenings.

역사

Discovered by William Herschel on August 21, 1784. Its extreme distance and retrograde orbit suggest it may have been captured from a dwarf galaxy long ago.

재미있는 사실

NGC 7006 has a retrograde orbit around the Milky Way, moving opposite to the galaxy's rotation. This retrograde motion supports the theory that it originated in a satellite galaxy that was consumed by the Milky Way.

커뮤니티 사진 (1)

Credit: NASA Hubble. License: CC BY 2.0. (Wikimedia Commons)

Credit: NASA Hubble. License: CC BY 2.0. (Wikimedia Commons)

Skybred Mar 2, 2026