9 lines
577 B
Markdown
9 lines
577 B
Markdown
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name: Alderamin (α Cep)
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constellation: Cep
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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 13:37:13.967876
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---
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the brightest star in the constellation at 2.44mag. It is a yellow-white star of spectral class A7, 49 light-years away, forming the constellation's rhombus along with β (3.21mag), ζ (3.35mag) and ι (3.52mag). At its centre lies the star ξ Cep. Alderamin becomes the closest star to the north celestial pole around 7500 AD due to precession of the Earth's axis. It has 17 times the luminosity of the Sun. |