Английская Википедия:52 Cygni

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Файл:NGC6960 Veil Nebula Supernova Remnant from the Mount Lemmon SkyCenter Schulman Telescope courtesy Adam Block.jpg
52 Cygni with NGC 6960, part of the Veil Nebula

52 Cygni is a giant star in the northern constellation of Cygnus with an apparent magnitude of 4.22. Based on its Hipparcos parallax, it is about Шаблон:Convert away.

52 Cygni is a probable horizontal branch (red clump) star, fusing helium in its core, although there is a 25% chance that it is still on the red giant branch (RGB) and fusing hydrogen in a shell around an insert core. As a clump giant it would be 2.27 billion years old, but only 910 million years if 52 Cygni is an RGB star.[1] It shines with a bolometric luminosity of about Шаблон:Solar luminosity at an effective temperature of 4,677 K.[2] It has a radius of Шаблон:Solar radius.[1]

At an angular separation of 6.0″ from 52 Cygni is a faint magnitude 9.5 companion.[3]

References

Шаблон:Reflist

Шаблон:Stars of Cygnus

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