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R Aquarii (R Aqr) is a variable star in the constellation Aquarius. [1]

16 relations: Aquarius (constellation), Bright Star Catalogue, Constellation, Durchmusterung, Gravity, Henry Draper Catalogue, Hipparcos, Karl Ludwig Harding, Mira, Orbital period, Parsec, Red giant, Smithsonian Astrophysical Observatory Star Catalog, Symbiotic star, Variable star, White dwarf.

Aquarius (constellation)

Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces.

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Bright Star Catalogue

The Bright Star Catalogue, also known as the Yale Catalogue of Bright Stars or Yale Bright Star Catalogue, is a star catalogue that lists all stars of stellar magnitude 6.5 or brighter, which is roughly every star visible to the naked eye from Earth.

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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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Gravity or gravitation is a natural phenomenon by which all things with mass are brought towards (or 'gravitate' towards) one another including stars, planets, galaxies and even light and sub-atomic particles.

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

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Karl Ludwig Harding

Karl Ludwig Harding (September 29, 1765 – August 31, 1834) was a German astronomer notable for having discovered the asteroid 3 Juno.

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Mira (also known as Omicron Ceti, ο Ceti, ο Cet) is a red giant star estimated 200–400 light years away in the constellation Cetus.

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Orbital period

The orbital period is the time taken for a given object to make one complete orbit around another object.

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A parsec (symbol: pc) is a unit of length used to measure the astronomically large distances to objects outside the Solar System.

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Red giant

A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.

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Smithsonian Astrophysical Observatory Star Catalog

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

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Symbiotic star

A symbiotic star is a type of binary star.

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Variable star

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

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White dwarf

A white dwarf, also called a degenerate dwarf, is a stellar remnant composed mostly of electron-degenerate matter.

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Redirects here:

AAVSO 2338-15, HD 222800, HIC 117054, HIP 117054, HR 8992, SAO 165849.


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

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