Английская Википедия:CK Carinae
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CK Carinae (CK Car / HD 90382 / SAO 238038) is a variable star in the constellation Carina, the keel of Argo Navis. It is a member of the star association Carina OB1-D, at a distance of around Шаблон:Val or Шаблон:Val.
Classified as a semiregular variable star, CK Carinae's brightness varies between apparent magnitudes +7.2 and +8.5 with a period of approximately 525 days.[1] It has a Gaia Data Release 2 parallax of Шаблон:Val,[2] which implies a distance of around Шаблон:Val, and is thought to be a member of the Carina OB1-D stellar association which is at a distance of about Шаблон:Val.[3][4] An analysis of the distances of apparently-nearby OB stars implies a distance of Шаблон:Val for CK Carinae.[5] It has an MK spectral classification of M3.5 Iab, with the luminosity class indicating an intermediate luminosity supergiant.[6]
CK Carinae is a red supergiant with an effective temperature of 3,550 K. It is one of the largest stars, with a radius 761 to 1,060 times larger than the sun, which means that if it were in the place of the Sun, its surface would reach beyond the asteroid belt, Earth being encompassed within the star. Consequently, CK Carinae is also a luminous star, radiating between 86,000 and 158,000 times as much energy as the sun.
See also
References
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- Английская Википедия
- M-type supergiants
- Semiregular variable stars
- Carina (constellation)
- Durchmusterung objects
- Henry Draper Catalogue objects
- Objects with variable star designations
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