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Science Astronomy Stars Variable Stars
Variable Stars are stars that change brightness. Their brightness can change from just a fraction (not even noticeable to the naked eye) up to 20 magnitudes. To get an idea of how much a magnitudes is, consider that the difference between brightest star one can see outside at night (in a fairly dark area) and the dimmest is about 6 magnitude. Over 300,000 variable stars are known and have been cataloged.
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The largest organization for variable stars: provides professional and amateur collaboration, research, and analysis of variable star observations.
ASSA's variable star group. News, FAQ, charts, and software.
Research group working on the GCVS, Sternberg Astronomical Institute, Moscow, Russia. Includes catalogs and publications.
The IBVS is a bulletin of Commissions 27 and 42 of the International Astronomical Union, published by Konkoly Observatory, Budapest, Hungary.
ASSA's variable star group. News, FAQ, charts, and software.
The IBVS is a bulletin of Commissions 27 and 42 of the International Astronomical Union, published by Konkoly Observatory, Budapest, Hungary.
Research group working on the GCVS, Sternberg Astronomical Institute, Moscow, Russia. Includes catalogs and publications.
The largest organization for variable stars: provides professional and amateur collaboration, research, and analysis of variable star observations.

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Last update:
August 6, 2020 at 5:25:08 UTC
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