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What is the largest star in the constellation of Cygnus?

KY Cygni is the largest star in the constellation of Cygnus and has an calculated/estimated radius of 1,420.00 times that of the Sun. It is a best guess calculation, we do not know for sure the actual size of the star as it is too far away.

The star has an apparent magnitude of 11.14. Apparent magnitude is a measure of how bright the object is as seen on Earth. It is too dim to see with the naked eye. The smaller the number, the brighter the star is. for comparison reasons, the Sun's apparent magnitude is -26.74. The dimmest star that we can see without the help of a pair of binoculars or telescope for the record is 6/6.5

The star is a red star based on the spectral type of the star. It is located at a distance of about 5,000.00 light years from our Solar System. It would take a spaceship 1 year per light year distance at the speed of light. A light year is the distance that light travels in a year which is about 5.88 trillion miles.

We currently do not have any spaceship that is capable of travelling that fast. The fastest man made object is the New Horizons probe which would take 54,000 years to reach the nearest star, 4.3 light years away.


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