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8 relations: Algol variable, American Association of Variable Star Observers, Ara (constellation), Durchmusterung, Henry Draper Catalogue, Hipparcos, Mass transfer, Smithsonian Astrophysical Observatory Star Catalog.
Algol variable
Algol variables or Algol-type binaries are a class of eclipsing binary stars that are related to the prototype member of this class, β Persei (Beta Persei, Algol) from an evolutionary point of view.
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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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Ara (constellation)
Ara (Latin: "The Altar") is a southern constellation situated between Scorpius and Triangulum Australe.
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Durchmusterung
In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.
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Henry Draper Catalogue
The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars.
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Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
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Mass transfer
Mass transfer is the net movement of mass from one location, usually meaning stream, phase, fraction or component, to another.
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Smithsonian Astrophysical Observatory Star Catalog
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
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AAVSO 1631-56, CCDM J16397-5700, HD 149730, HIC 81589, HIP 81589, HJ 4866AB, SAO 244037.
