Where's Aquila?

Eagle is one of the twelve constellations. The center position is right ascension 19: 40 and declination 3. The area is about 652 square degrees. Located in the south of Lyra and the north of Sagittarius, most of them are in the Milky Way. There are 87 stars in the constellation whose visual magnitude is brighter than 6, of which 13 is brighter than 4.

On the east bank of the Milky Way, far away from Vega, there is a bright star slightly darker than her, which is the alpha star of Altair and Aquila. Look, this is the map of Aquila. The ancient Greeks imagined it as an eagle flying in the night sky, and Altair was the heart of the eagle.

The apparent magnitude of Altair is 0.77m, which is the twelfth bright star in the whole day. Its connection with the beta and gamma stars of Aquila points to Vega. In ancient China, the beta star and the gamma star were regarded as two children carried by a cowherd on a pole, and he was struggling to catch up with Vega. Unfortunately, the cruel queen mother tore off the golden hairpin on her head and welcomed the sky with one move. In an instant, a Tianhe fell from the sky, which almost separated the two lovers forever.