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T Andromedae (T And) is a variable star of the Mira type in the constellation Andromeda. [1]

8 relations: Andromeda (constellation), Constellation, Durchmusterung, General Catalogue of Variable Stars, Henry Draper Catalogue, Mira variable, Smithsonian Astrophysical Observatory Star Catalog, Variable star.

Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy and remains one of the 88 modern constellations.

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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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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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The General Catalogue of Variable Stars (GCVS) is a list of variable stars.

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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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Mira variables, named after the prototype star Mira, are a class of pulsating variable stars characterized by very red colours, pulsation periods longer than 100 days, and amplitudes greater than one magnitude in infrared and 2.5 magnitude at visual wavelengths.

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The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.

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

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Redirects here:

T And.


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

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