What is the brightest star in the southeast of the summer night sky?

At about 8: 30, the brightest star in the southeast is Vega, the fifth brightest star on earth except the sun, located in Lyra; There is a bright star on Vega's right, which is Altair of Aquila.

The bright star on Vega's left is Tianjin IV in Cygnus. Connecting these three stars is a right triangle, which is a very important symbol of the summer night sky, also known as the summer triangle.

Extended data:

Vega is the brightest star in Lyra. Vega is connected with several nearby stars to form a Lyra, which westerners call Lyra. It approaches the sun at a speed of 14 km per second. 10.3 million years ago, Vega was once the Polaris, and because of the precession of the earth's axis, Polaris is the alpha star of Ursa minor. But in 6.5438+0.2 million years, Vega will return to the prominent position of Polaris.

According to scientists' calculations, around 14000, the North Pole will point to Vega, and Vega will replace Shao Weizengba (the star of Cepheus) as the North Star, and invivo will also move to the position of the second bright star "Old Age" in the sky. (Around 4000 AD, Shao Weizengba will replace Alpha Ursa minor as the North Star)

Next to Vega, four stars form a small diamond. Legend has it that this small diamond is a shuttle used by the weaver girl to weave cloth. While knitting, the Weaver Girl looked up at the Cowherd (Hegu II) and her two sons (Hegu I and Hegu III) on the east bank of the Milky Way with deep affection.

References:

Baidu encyclopedia-Vega