Which constellation is Polaris in?

Ursa minor is the Polaris constellation closest to the north celestial pole, and Ptolemy and the modern eighty-eight constellations both include Ursa minor. Ursa minor marks the position of the north celestial pole, and Alpha Ursa minor, the brightest star in the constellation, is the current Polaris.

Like Ursa Major, Ursa Major's tail can also be regarded as the handle of a bucket (or spoon), so it is called "Little Beidou": four of the seven stars form a ladle on the bucket, just like the Big Dipper. Ptolemy, an astronomer in the 2nd century A.D., incorporated Ursa minor into its 48 constellations, and since then it has become one of the 88 modern constellations.

Extended data:

Search method of Polaris

You can find the Big Dipper first, and then find the North Star through the Big Dipper. The Big Dipper is a part of Ursa major. Graphically, the Big Dipper is located at the back and tail of Ursa Major. Of these seven stars, six are secondary stars and one is tertiary.

Through the connection of two stars (Shu Tian and Tian Xuan) in Doukou, Polaris was discovered after extending in the direction of Doukou for about five times. Beginners can look for other constellations in turn from the Big Dipper.

Everything in the universe is moving and changing, and stars are no exception. As the stars are also moving, the pattern of the Big Dipper is certainly changing. These seven stars are at different distances from us. At 100 light-years, their respective speeds and directions are different.

Astronomers have calculated that the Big Dipper seen 654.38 million years ago and the Big Dipper seen 654.38 million years later are very different from what people see today. In addition, the celestial ridge of the Big Dipper, the intersection of Tian Quan and Kaiyang and Yaoguang are connected with Yuheng, extending seven times, and Polaris can also be found.

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