Which two constellations are Altair and Vega?

Altair, also known as Heguji and "αAQL/ Altair", is the twelfth bright star, white, and a corner of the summer triangle in starry sky observation. Its connection with beta star Hegu I and gamma star Hegu III all point to Vega. The west calls this star Altair, which is the abbreviation of "Al nasr-l'tair:" in Arabic.

Vega is also called Vega or α (Lyra α, the brightest star in Lyra, about 25? Light years. Vega is an oblate star with a radius of 2.362×2.8 18 R⊙, an equatorial radius ratio of 19%, a mass of 2. 135 0.074m ⊙ and a surface temperature of 9602 180k.

Altair is located at the lower left of Vega, echoing Vega from a distance. It is a bright yellowish star, and the two small stars on both sides of it are called "Polaris", which is said to be a pair picked by Altair. The Milky Way between Altair and Vega is generally invisible in cities.

In the countryside with less light pollution, looking towards the goose head of Cygnus, you can see a faint cloud, that is, the Milky Way. In ancient China, the swan's body was regarded as a ferry, and there was another saying that it was used to connect the two banks of the Milky Way.

Related China cultural stories:

There is a Tanabata story in China mythology, which tells that Cowherd (Hegu II) and his two children (Hegu I and Hegu III) are separated from their mother, Weaver I, and two four-star Weaver II and III near it form a regular triangle, which is collectively called Weaver Samsung by the Milky Way.

But magpies build a bridge on the Milky Way every year on the seventh day of the seventh lunar month, so that cowherd and weaver girl can meet each other briefly. A stone statue of Han Dynasty was unearthed in Nanyang, Henan Province, with a white tiger as the center, Vega carved in front of the white tiger and Altair carved behind it. The image of the Altair is that a farmer leads a cow, and the three stars on the cow are the three stars of the river drum.

Weaver, sitting in a high bun, surrounded by four stars. It is also based on this legend that Tanabata called the Weaver Girl "Weaver Girl".

Refer to the above? Baidu Encyclopedia-Vega, Baidu Encyclopedia-Altair