What constellation does Tianjin Four Stars belong to?

Tianjin IV (Deneb)/_d_n_b/ is the first-class star of Cygnus. It is also one of the endpoints of the Great Triangle and the Northern Cross in summer. It is the brightest star in Cygnus, one of the brightest stars known, and the 19 th bright star in the night sky. Tianjin IV is a blue and white Supergiant star with an average apparent magnitude of 1.25, which is the brightest first-class star in Betelgeuse IV.

However, due to the long distance, its brightness is 196 thousand times that of the sun, but it is little known. In Bayer nomenclature, its name is α Cygni (Latin for α Cygni, abbreviated Alpha Cyg or α Cyg). Ranked fourth among China star officials in Tianjin, hence the name.

Tianjin IV is the 19 bright star in the whole sky. Every year on September 7th, 2 1:00 and1October 23rd 19:00 are the highest points in the night sky, corresponding to summer nights in the northern hemisphere, higher than 45 north latitude. It is an arch star and will never fall below the horizon. In Minneapolis, Minnesota, hennepin county, Montreal and Turin, the lowest point of Tianjin IV will be very close to the north of the horizon. In the southern hemisphere, Tianjin IV can't be seen in the area south of 45 south latitude. Therefore, in South Africa, southern Australia and northern New Zealand, it can only appear on the horizon for a short time in winter.