Where is Andromeda's earth?

The declination span of Andromeda in celestial coordinates is 2 1.7 degrees to 53.2 degrees. For most parts of China, Andromeda is located near the zenith. The area of Andromeda is very large, equivalent to 1400 times of the full moon.

In order to find Andromeda, you can first find the Big Dipper in Ursa major. Then along the extension line of the two stars at the mouth of the Big Dipper, you can find a bright star, the North Star. Near Polaris, there is a constellation that looks like M or W, and that is Cassiopeia. Looking at the low latitude of Cassiopeia, next to it is the famous Andromeda.

However, now is not the best season to see Andromeda. At present, Andromeda will set in the evening and will not rise until the early morning of the next day. Andromeda is most easily observed around June 165438+ 10 every year, and can be seen all night.

So, what are the highlights of Andromeda?

In Andromeda, the brightest star is General Yi Tian, a four-star system about 350 light-years away from the Earth. Through ordinary astronomical telescopes, General Tian looks like a binary star system, with one star appearing golden yellow and the other purple blue.

Milac in Andromeda is another bright star. It looks red because it is a red giant star. Milac is about 200 light-years away from the earth, and its mass is about 3.5 times that of the sun, but its radius has expanded to 100 times that of the sun.

Because Andromeda is not in the direction of the silver disk, it will not be affected by interstellar dust, so some extragalactic galaxies can be seen in this galaxy. Among Andromeda, the most famous deep space object is the Andromeda galaxy, which is located at the knee of Andromeda. This galaxy is visible to the naked eye. It looks like a bright spot.

Although Andromeda galaxy looks dim, it is actually a very big galaxy, bigger than the Milky Way. Only Andromeda galaxy is 2.54 million light years away, which makes it look dim. Near Andromeda galaxy is a triangle galaxy separated by Milac.

In addition, every year in the middle of June 165438+ 10, Andromeda will have a meteor shower. However, the frequency of andromedids is rare, and it is not as spectacular as the Perseid meteor shower and other major meteor showers.