What constellation is 1 1.9?

165438+1October 9th is Scorpio, and the birth dates from 65438+1October 24th to165438+1October 22nd all belong to Scorpio. Scorpio is 330 times the diameter of the sun, its actual brightness is 1800 times that of the sun, and it is 270 light years away from the earth. Its mass is 40 times that of the sun and its density is only one millionth of that of water.

This huge low-density star, which emits red light, is also called "red giant". Scorpio is actually a binary star, its main star is a red giant star, and there is a blue "companion star" beside it, which surround each other.

Extended data:

Scorpio is the southernmost constellation of the zodiac, belonging to the house, heart and tail of 28 constellations. Its long string of 2 and 3 stars forms a curved arc, which looks like a big scorpion with two claws. Its β and π stars are the head, α is the heart, and ε, μ, η, θ and λ are the tails, forming a scorpion shape with a wide range and many stars. It is a striking big constellation in the summer sky in the northern hemisphere.

The center position is at right ascension 16: 40 and declination -36. The main star α (Antares) in the constellation is a bright red star, which is very eye-catching. Because it is bright red, China called it "fire" in ancient times.