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Coma Berenices constellation Ursa Major South East northern sky, introduced by Conon, in honor of Berenice II, wife of Ptolemy III; discernible to the naked eye for a group of stars in the shape of V, almost at the center of the arc formed by the Great Bear queue.
The Coma Berenices is a constellation easy to identify, though not contain any bright star; It can be the basis to the northeast of the Lion, to the west of the bright star Arcturus and north of the Virgin. Its main feature, which has given rise to the name of the same constellation, is a “crown” of stars of the fourth and fifth well visible magnitude in a night not excessively polluted, which constitutes a group of stars actually physically linked to one another, an open cluster in the process of dissolution. In addition to this group, Coma Berenices includes another star of the fourth magnitude, particularly on the eastern side; the brightest star is the β Comae Berenices. The best period for your observation in the evening sky is March to August; the northern hemisphere is a typical figure of the spring and early summer sky when it presents very high in the sky. From the southern hemisphere shows average northernmost low on the horizon, but not being a constellation from highly boreal declination is clearly visible from all populated areas of the Earth.
β Comae Berenices, with an apparent magnitude of 4.23, has an absolute magnitude of slightly brighter than the Sun, which gives an idea of how weak it would appear the Sun at a distance of only 27 light years, that astronomically speaking is a negligible distance. α Comae Berenices is the second brightest star in Coma Berenices, and has its own name, Diadem; It is a binary star of magnitude +4.32 which is 60 light-years away from the solar system. Is the gem in Berenice’s crown. γ Comae Berenices is one giant orange of magnitude 4.35, that is 170 years light.
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