What is vv cephei star

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VV Cephei A is a red supergiant not a hyper because it isn't luminous enough with a disputed diameter. Categories : Astronomy Stars. Navigation menu Personal tools Create account Log in. Namespaces Article talk page.

Views Read View source View history. This page was last modified on January 30, , at This page has been accessed 1, times. Privacy policy About Conservapedia Disclaimers Mobile view. RA: Bright giant stars. To put this in context, the temperature of our Sun is about 5, Kelvin as said by Google. VV Cephei Luminosity Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out.

The figure of 11, VV Cephei estimated radius has been calculated as being The Sun's radius is ,km, therefore the star's radius is an estimated ,, If you need the diameter of the star, you just need to multiple the radius by 2.

However with the release of updated Hipparcos files, the radius is now calculated at being round The figure is derived at by using the formula from SDSS rather than peer reviewed papers. It has been known to produce widely incorrect figures. VV Cephei Iron Abundance is 0. The value comes from the Hipparcos Extended Catalog. VV Cephei apparent magnitude is 5. Apparent Magnitude is also known as Visual Magnitude. If you used the Parallax value, VV Cephei absolute magnitude is Absolute Magnitude is the apparent magnitude of the star from a distance of 10 parsecs or This assumes that there is nothing in between the object and the viewer such as dust clouds.

To really compare the brightness of the star, it is best to use Absolute rather than Apparent Magnitude. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, A faint star will have a high number. Because VV Cephei is much cooler than the Sun, every square inch of its surface emits much less light than a square inch of the Sun does. But because VV Cephei is so enormous, its surface has a lot of square inches.

So the star produces more light in a single hour than the Sun will in an entire year.