9 lines
857 B
Markdown
9 lines
857 B
Markdown
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name: Deneb (α Cygni)
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constellation: Cyg
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created_by: editor.cs
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created_date: 2023-11-05 16:11:40.285750
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updated_by: editor.cs
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updated_date: 2023-11-05 16:11:40.285754
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---
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The brightest star of the constellation, which, together with Vega in Lyra to the west and Altair in Aquila to the south, forms the Summer Triangle. This bright blue-white supergiant (1.2 mag) is much farther away than other bright stars in our sky - it is located at a distance of 2600 light-years. In order for Deneb to be so bright from this distance, it must have a greater energy output than 60,000 Suns, making it one of the most luminous stars visible to the naked eye (for example, Vega is 25 light-years away from us and Altair is only 11 light-years away). Its mass is 19 times that of the Sun and its diameter is 203 times larger. The surface temperature reaches 8500K. |