What are the characteristics of Cygnus?

Cygnus is one of the northern constellations. At 20 o'clock on September 25 every year, the swan constellation rises to the sky. Summer and autumn are the best time to observe Cygnus. Interestingly, the rise and fall of Cygnus is really like a flying swan: it rises obliquely from the northeast to the sky, and when it reaches the zenith, its head points to the west. When it moves to the northwest, it turns head down, tail up and disappears on the horizon.

Cygnus is completely immersed in the white Milky Way, standing on both sides of the Milky Way with Aquila and Lyra. The three main stars (alpha star) of these three constellations form a big triangle (summer triangle). Cygnus is located at 20: 30 right ascension and 44 declination. The area is 804 square degrees. There are 19 1 stars in the constellation with visual magnitude greater than 6, and 22 of them have brightness greater than 4. Therefore, in the summer night sky, although the Milky Way is like a veil and full of stars, it is not difficult to find Cygnus, which can still shine in the Milky Way.

There is also a very famous meteor shower in Cygnus, the fireball, which generally appears in late August, the most vigorous period is August 20, and the radiation point is near K star. Bright explosions can often be seen at the end of the meteor, which is very eye-catching in the summer night sky.