Celestial objects and related stars

The Northern Crown has 23 stars. The brightest of them, with 2.2 m of Gamma, the Latin word for precious stone, but is also called Alphecca. This is relatively light, as the average - brightness of the stars of the Northern Crown at 4.87 m. The second brightest star in the Northern Crown is the Kansan with a brightness of 3.7 m. These two stars have named only as names and not only, like the other 21 stars, after the Greek alphabet. When the 23 stars of the Northern Crown, the striking, almost all of the weaker section of the brightness are classified. Thus there is only one star in the category of 2.0 - 2.9 m is classified. Also, only two fall into the category of 3.0 -. 3.9 m However, the same 7 stars found in the category 4.0 - 4.9 m. The largest number is the 13-star category 5.0 - 5.9. M (replace map of constellations of the Northern Crown) I. Named Stars: The Gamma / Alphecca (5, a CrB) is about 80 light years away from the sun. It's like I said, the brightest star of the Northern Crown, and is also bluish - white The Kansan (2, CrB b) is about 114 light years away from the sun and as said above the second brightest star in the Northern Crown II Doppelsterne1: 2 hr 5.6 m / 5.9 m , the star system 59 light years CrB hour away. In this system, two yellowish shining star to move in only 41.5 years, about a common center of gravity. Quite separate to the two stars, you need a medium telescope of 15 cm aperture 8 g CrB 4.1 m / 5.5 m , the g system is approximately 200 light years away and consists of two bluish - white stars 7, z CrB 5.0 m / 6.0 m , the System z CrB is 450 light years away III. Variable stars: R CrB 5.7 m - 14.8 m , the brightness of this variable star fluctuates. It reaches a maximum brightness of 5.7 m and can be seen just with the naked eye. If, however, their brightness in the minimum drops to 14.8 meters, you need a very large telescope for the observation of this star. These wastes are due to brightness emitted clouds of soot. T CrB 2.0 m / 10.8 m , T Corona Arboreal is about 2,000 light years distant recurrent nova 2 in the Northern Crown. With its normal brightness of 10.8 m, it is very faint, however, reached during the outbreaks in 1866 and 1946 a magnitude of 2.0 m. In short, the Northern Crown is a small constellation that can be observed on spring sky. It consists of 23 stars, the brightest is Gamma, also known by the name Alphecca. It is surrounded by the three constellations Hercules, Bootes / boat and the snake. In mythology it is said that it is the crown of the Cretan princess Ariadne, but there are many different stories. With its area of 179 square degrees, it is relatively small and is ranked 72 of the list of the 88 recognized constellations.