9 lines
486 B
Markdown
9 lines
486 B
Markdown
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name: Achird (η Cassiopeiae)
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constellation: Cas
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created_by: editor.cs
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created_date: 2022-01-21 17:00:00
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updated_by: skybber
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updated_date: 2022-01-23 10:11:59.909995
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a well-known binary star discovered in 1779 by William Herschel. The yellow, golden star (3.7mag) has a guide star of brightness 7.4mag with a red, purple tinge at a distance of 13" (the distance varies from 5" to 16" in period), which orbits it in 526 years. We can resolve the double star in a 6 cm telescope. |