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20 Aquilae

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20 Aquilae (abbreviated 20 Aql) is a variable star in the constellation of Aquila. [1]

6 relations: Apparent magnitude, Aquila (constellation), Constellation, Flamsteed designation, Star, Variable 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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Aquila (constellation)

Aquila is a constellation on the celestial equator.

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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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Flamsteed designation

A Flamsteed designation is a combination of a number and constellation name that uniquely identifies most naked eye stars in the modern constellations visible from southern England.

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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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Variable star

A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.

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References

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

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