Which constellation does Polaris belong to? Ursa major, Ursa minor, Orion and Perseus.

Polaris is the brightest star in Ursa minor, that is, Alpha in Ursa minor. It is a yellow giant with spectral type F, about 434 light-years away from the Earth, and its mass is about four times that of the sun. It is a bright star far away from the earth, at the tip of the bear's tail in the constellation diagram. Gou Chenyi is also a star of underworld nature. Connect a straight line between Tian Xuan and Shu Tian at the front end of the Big Dipper, and then extend the distance five times to Shu Tian. You will meet a bright second-class star, which is Gou Chenyi. This is the easiest way to find Gou Chenyi.

Polaris (Gouchenyi) is also a three-in-one system. The distant companion star (Polaris B) can be clearly observed with a small telescope, while the nearby companion star (Polaris) is too close to Polaris (the apparent distance is only 0.2 ",the actual distance is 18.5) and too dark to see. It was not until early August 2005 that Hubble captured its image: Polaris was very close to the North Pole of the Earth in the sky. Therefore, it always seems to be in the northern sky. It is because of its important position that it is famous. The whole northern sky is a dark star, and only Polaris and Big Dipper are brighter, so these two constellations are very easy to identify. Ursa major is brighter than Ursa minor, but Polaris on Ursa minor's tail is the only second-class star in the northern sky, and it is also the only star in the whole starry sky whose position is relatively constant and does not rotate. Polaris can be found at the five-fold line of Cassiopeia W opening. The Big Dipper in Ursa minor will revolve around Polaris. And Polaris is above the horizon all night (if you are in the mountains, you may not see it). After you find Polaris in Ursa major, you can always find Ursa minor, because Polaris is also the last star at the tail of Ursa minor. Conversely, you can easily find the constellation Ursa major.

The judgment that "the main feature of Ursa major is the Big Dipper, and the feature of Ursa minor is the North Star" is correct.