Star Cluster: Difference between revisions
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This star cluster is most readily identifiable by the asterism of four relatively bright stars for which it is named. The four are often identified as A, B, C, and D in order of increasing right ascension. The brightest of the four stars is C, or Theta Orionis C. | This star cluster is most readily identifiable by the asterism of four relatively bright stars for which it is named. The four are often identified as A, B, C, and D in order of increasing right ascension. The brightest of the four stars is C, or Theta Orionis C. | ||
[[File:NGC 1981.png|thumb|186x186px|NGC 1981]] | [[File:NGC 1981.png|thumb|186x186px|NGC 1981]] | ||
'''NGC 1981''' is a young, bright open cluster visible in the constellation of Orion. It is a collection of about 20 or so stars (largely magnitudes 7 through 10) and is about 40 light-years closer to Earth than the Orion Nebula. | '''NGC 1981''' is a young, bright open cluster visible in the constellation of Orion. It is a collection of about 20 or so stars (largely magnitudes 7 through 10) and is about 40 light-years closer to Earth than the Orion Nebula. | ||
'''Collinder 70 is '''a large open cluster, located around the belt of Orion. It includes all three belt stars: Mintaka (the Girdle), Alnilam (The string of Pearls) and Alnitak (the Belt). The cluster has a diameter of almost 3 degrees and consists of 100 stars or more. | [[File:Collinder 70.png|thumb|186x186px|COLLINDER 70]] | ||
[[File:Collinder 69.png|thumb|187x187px]] | '''Collinder 70 is '''a large open cluster, located around the belt of Orion. It | ||
includes all three belt stars: Mintaka (the Girdle), Alnilam (The string of Pearls) and Alnitak (the Belt). The cluster has a diameter of almost 3 degrees and consists of 100 stars or more. | |||
[[File:Collinder 69.png|thumb|187x187px|COLLINDER 69]] | |||
'''Collinder 69''' is an open star cluster located north-west of the star Betelgeuse in the constellation of Orion. It is about five million years old and roughly 1,300 ly (400 pc) away from the Sun. Included within the cluster is a double star named Meissa. | '''Collinder 69''' is an open star cluster located north-west of the star Betelgeuse in the constellation of Orion. It is about five million years old and roughly 1,300 ly (400 pc) away from the Sun. Included within the cluster is a double star named Meissa. | ||
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'''NGC 1981''' can be found by plotting a course to '''NGC 1981 Sector YZ-Y C11'''. A class A Blue Supergiant can be found near this cluster by plotting a course to '''HD 37660'''. | '''NGC 1981''' can be found by plotting a course to '''NGC 1981 Sector YZ-Y C11'''. A class A Blue Supergiant can be found near this cluster by plotting a course to '''HD 37660'''. | ||
Both Collinder 70 and 69 are particularly difficult to make out in the rich star-field found in the '''Orion Nebula'''. The most noticeable clustering of these stars are possible to find through the following:<blockquote>'''Collider 70''' can be reached by navigating to '''COL 70 SECTOR MR-U C3-8'''.</blockquote><blockquote>'''Collinder 69''' can be reached by navigating to '''COL 69 SECTOR ZO-R C4-8'''.</blockquote>'''Mintaka''' and '''Alnitak''' can be found by searching for them via the galaxy map. | Both '''Collinder 70''' and 69 are particularly difficult to make out in the rich star-field found in the '''Orion Nebula'''. The most noticeable clustering of these stars are possible to find through the following:<blockquote>'''Collider 70''' can be reached by navigating to '''COL 70 SECTOR MR-U C3-8'''.</blockquote><blockquote>'''Collinder 69''' can be reached by navigating to '''COL 69 SECTOR ZO-R C4-8'''.</blockquote>'''Mintaka''' and '''Alnitak''' can be found by searching for them via the galaxy map. | ||
== Gallery == | == Gallery == | ||