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8 relations: American Association of Variable Star Observers, Apparent magnitude, Beta Lyrae variable, Constellation, Crux, Light curve, O'Connell effect, Star.
American Association of Variable Star Observers
Since its founding in 1911, the American Association of Variable Star Observers (AAVSO) has coordinated, collected, evaluated, analyzed, published, and archived variable star observations made largely by amateur astronomers and makes the records available to professional astronomers, researchers, and educators.
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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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Beta Lyrae variable
Beta Lyrae variables are a class of close binary stars.
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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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Crux
Crux is a constellation located in the southern sky in a bright portion of the Milky Way.
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Light curve
In astronomy, a light curve is a graph of light intensity of a celestial object or region, as a function of time.
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O'Connell effect
The O'Connell effect is an asymmetry in the photometric light curve of certain close eclipsing binary stars.
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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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