What constellation does arcturus belong to? A little knowledge about arcturus.

In the universe, there is a lot of space and time, full of many abilities. In ordinary matter, there are planets and stars that we are familiar with, as well as stars that we can't name, including nebulae and clusters, but most of the stars belong to a constellation. Before we know it, we should know roughly the constellation it belongs to. What constellation does arcturus belong to? Arcturus belongs to Capricorn and is the main star of Capricorn. If you can see Capricorn in the night sky, the first thing you see is probably arcturus, because arcturus is the brightest star in Capricorn and the brightest star in the northern night sky. Its brightness is 265,438+05 times that of the sun, but it is much darker than the bright Cygnus KY and Sagittarius kw. The effective surface temperature of arcturus is 4 100℃, which is 5500℃ lower than the surface temperature of the sun. Every evening in late May, we choose to confirm the Big Dipper, and then draw a big arc along the curves of several bucket handle stars to find arcturus. Is arcturus a red star? No, it belongs to Red Supergiant star. Its diameter is always changing, not static. So far, according to the comparison of similar stars, the average diameter of arcturus is 2 1 times the diameter of the sun. What is this concept? In other words, a arcturus can hold 92,665,438+0 suns. Although arcturus is very big, it is much smaller than the largest star in the universe-SHIELD UY. But the mass of arcturus is 1.04- 1. 16 times that of the sun, which is opposite to the direction of the sun. So is arcturus a red giant? Obviously not, it is a larger red Supergiant star, which belongs to the massive star in the main sequence, so it is easy to see in the night sky. How far is arcturus from the earth? It is about 36.72 light years away from the earth, and it is still far away from the earth. The reason why it can be seen in the night sky is mainly because its star is very bright, but because of the distance, such a bright star can only be found at night, so it is extremely far from the earth. How far is arcturus from the earth? About 36.7738+0 light years away from us! Many people may not feel this distance, but you should know that the sun is only 0.0000 158 light years away from the earth, so you can imagine how far arcturus is from the earth. At present, the earth has not developed the technology of manned arrival.