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Galactic anticenter

From Wikipedia, the free encyclopedia
Direction in space opposite the Galactic Center from Earth
Overview sketch of the Milky Way with the direction of the Galactic anticentre indicated, as seen from the Solar System [1]
Map of the Auriga constellation. Elnath is the star at the bottom of the ring.

The galactic anticenter is a direction in space directly opposite to the Galactic Center, as viewed from Earth. This direction corresponds to a point on the celestial sphere.

From the perspective of an observer on Earth, the galactic anticenter is located in the constellation Auriga, and the Crab nebula and the bright star Beta Tauri (Elnath) appear nearest this point. For binocular and telescope observers in dark sky locations, the magnitude 8.5 star HIP 27180 appears closest to this point.

Location

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In terms of the galactic coordinate system, the Galactic Center (in Sagittarius) corresponds to a longitude of 0°, while the anticenter is located exactly at 180°.[2] In the equatorial coordinate system, the anticenter is found at roughly RA 05h 46m, dec +28° 56'.[3]

See also

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References

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  1. ^ "Gaia EDR3 - Galactic anticentre - Gaia - Cosmos". www.cosmos.esa.int. Retrieved 2022年06月17日.
  2. ^ "Galactic Coordinates". Thinkastronomy.com. Archived from the original on 2016年09月23日. Retrieved 2010年08月17日.
  3. ^ "Galactic Anticenter on the Internet Encyclopedia of Science". Archived from the original on 2011年02月06日. Retrieved 2009年10月30日.



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