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20 Cygni

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20 Cygni is a star in the constellation Cygnus. [1]

8 relations: Apparent magnitude, Centre de données astronomiques de Strasbourg, Constellation, Cygnus (constellation), Hipparcos, Hydrogen, Red giant, Star.

Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

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Centre de données astronomiques de Strasbourg

The Centre de Données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.

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Constellation

A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.

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Cygnus (constellation)

Cygnus is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan.

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Hipparcos

Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.

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Hydrogen

Hydrogen is a chemical element with symbol H and atomic number 1.

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Red giant

A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.

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Star

A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

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Redirects here:

D Cygni.

References

[1] https://en.wikipedia.org/wiki/20_Cygni

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