Polaris - Wikipedia
网页Polaris is a star in the northern circumpolar constellation of Ursa Minor. It is designated α Ursae Minoris (Latinized to Alpha Ursae Minoris) and is commonly called the North Star or Pole Star.
Polaris: The North Star – Alpha Ursae Minoris - Constellation Guide
网页2014年7月28日 — Polaris, also known as the North Star, Alpha Ursae Minoris or Star of Arcady, is the brightest star in Ursa Minor constellation. It is the closest bright star to the North Celestial Pole. The pole marks true north, which makes the North Star important in navigation, as the star's elevation above the horizon closely matches the observer's latitude.
Polaris | Location, Constellation, & Facts | Britannica
网页2024年8月29日 — Polaris, Earth’s present northern polestar, or North Star, at the end of the ‘handle’ of the so-called Little Dipper in the constellation Ursa Minor. Polaris is actually a triple star. It is located about 447.6 light-years from Earth and is …
What is the North Star and How Do You Find It? - NASA Science
网页2021年7月28日 — Polaris, known as the North Star, sits more or less directly above Earth's north pole along our planet's rotational axis. This is the imaginary line that extends through the planet and out of the north and south poles. Earth rotates around this line, like a …
Polaris (North Star) - Star Facts
网页2019年9月9日 — Polaris is a triple star system consisting of the yellow supergiant Polaris Aa and two white (spectral type F) main sequence stars, Polaris Ab and Polaris B. Polaris Aa and Ab are in close orbit with each other and Polaris B is orbiting the pair. Polaris Aa has the spectral classification F7Ib.
The North Star | Polaris Facts, Location, and How to Find It
网页The North Star is Polaris, located in the constellation Ursa Minor. It does not sit directly on the Earth’s north celestial pole, but it is very close. In the northern hemisphere, Polaris is easy to identify using the Little Dipper as a reference.
Polaris: How to find the North Star | Space
网页2022年1月24日 — Polaris is part of the constellation known as Ursa Minor and the cluster of stars called the Little Dipper. The North Star is not the star closest to us, nor is it the brightest star in the...
Polaris Star – Facts and Info about the North Star
网页Polaris, also known as the North Star, Alpha Ursae Minoris or Star of Arcady, is the brightest star in Ursa Minor constellation and is notable for being the closest bright star to the North Celestial Pole.
What is the North Star? Is the North Star always north? - Star Walk
网页2023年2月20日 — The North Star, or Polaris, is a very special star that sits almost directly at the Earth’s North celestial pole. It’s the only bright motionless star in the sky. It’s a more consistent navigational tool than a magnetic compass.
Polaris (α Ursae Minoris) Facts - The Nine Planets
网页2020年1月20日 — Polaris is the brightest star in the constellation of Ursa Minor. It is a triple star system and currently, it is our North Star or Pole Star. This title is given to stars that are close to the North Pole – something that changes through the passing of years due to Earth’s movement. Key Facts & Summary
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