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2 Cygni (2 Cyg) is a star in the constellation Cygnus. [1]

5 relations: Apparent magnitude, Constellation, Cygnus (constellation), Light-year, Star.

The apparent magnitude (m) of a celestial object is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere.

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In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU).

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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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A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances.

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A star is a luminous sphere of plasma held together by its own gravity.

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[1] https://en.wikipedia.org/wiki/2_Cygni

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