KY Cygni (Supergiant Star) Star Facts

Facts

• KY Cygni is a very luminous Supergiant Star type star. KY Cygni is a M3-4I supergiant star based on the spectral type that was recorded in Simbad at Strasbourg University.
• KY Cygni is not part of the Cygnus constellation outline but is within the borders of the constellation.
• Based on the spectral type (M3-4I) of the star, the star's colour is red .
• The star can not be seen by the naked eye, you need a telescope to see it.
• KY Cygni has a radius that is 1,420.00 times bigger than the Suns.

Location

The location of the supergiant star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For KY Cygni, the location is 20h 25m 58.05 and 38° 21` 7.6 .

Physical Properties

Colour

Based on the star's spectral type of M3-4I , KY Cygni's colour and type is red supergiant star. Based on the spectral type, we can deduce that the surface temperature of the star is in the order of between below 3,500K based on the notes from Harvard University. To put this in context, the temperature of our Sun is about 5,778 Kelvin as said by Google.

Radius

KY Cygni Radius has been calculated as being 1,420.00 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 988,036,000.00.km. If you need the diameter of the star, you just need to multiple the radius by 2.

Apparent (Brightness) and Absolute Magnitudes

KY Cygni has an apparent magnitude of 11.14, this is a measure of the brightness of the star as seen from Earth. Apparent Magnitude is also known as Visual Magnitude.

Absolute Magnitude is the apparent magnitude of the star from a distance of 10 parsecs or 32.6 light years. 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.

Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

Alternative Names and Meanings

• The two letters at the start identify that the star is a variable star. The letters are allocated as the next in the list up e.g. GH follow GG, all the way up to ZZ then a V and a number is the next in the order.

Distance to KY Cygni

KY Cygni is an estimated 5,000.00 light years from our Solar System (Earth and Sun). It would take a spaceship 5,000.00 years travelling at the speed of light to get there. We don't have a space ship that can travel that distance or at that speed yet.