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V Coronae Australis

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V Coronae Australis (V CrA) is a R Coronae Borealis variable star in the constellation Corona Australis. [1]

9 relations: Constellation, Corona Australis, Effective temperature, Epoch (astronomy), Guide Star Catalog, Hipparcos, International Celestial Reference System, R Coronae Borealis variable, Variable star designation.

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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Corona Australis or Corona Austrina is a constellation in the Southern Celestial Hemisphere.

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The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.

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In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.

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The Guide Star Catalog (GSC) is also known as the Hubble Space Telescope, Guide Catalog (HSTGC).

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

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The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU).

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An R Coronae Borealis variable (abbreviated RCB, RCrB) is an eruptive variable star that varies in luminosity in two modes, one low amplitude pulsation (a few tenths of a magnitude), and one irregular unpredictably sudden fading by 1 to 9 magnitudes.

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Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.

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[1] https://en.wikipedia.org/wiki/V_Coronae_Australis

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