How far is Polaris from the earth? How many kilometers?

Polaris is 434 light years away from the earth, and 1 light year is about 946 1 100 million kilometers, so Polaris is 4 106074 million kilometers away from the earth.

Polaris refers to the star closest to the north celestial pole, so Polaris is not always the same. At present, it refers to "Gou Chen Yi". Polaris is a bright star in the northern part of the sky, very close to the north celestial pole, almost opposite the earth axis.

About 15000 to 13000 years ago, Polaris was named Vega because of Yan Zi Shi's Weaver Girl, which originated from the natural worship of ancient stars by ancient Han people. Therefore, it is named Polaris.

Extended data

The characteristics and uses of Polaris are:

1, Polaris is the brightest star in Ursa minor and the alpha star in Ursa minor. It is a yellow giant with a spectral type of 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.

2. Because the earth rotates around the earth's axis, and Polaris is very close to the north extension line of the earth's axis, the sky is almost motionless at night, and the head is northerly, which can indicate the north.

3. Polaris is a very important indicator of field activities and ancient navigation direction, and it is also a directional constellation ranging from stargazing to astrophotography and accurately located by the equatorial observatory in the observation room. Because Polaris is closest to true north, people on earth have been navigating by its starlight for thousands of years.

Baidu encyclopedia-Polaris