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8 Aquarii

8 Aquarii is a blue-white sub-giant of the spectral class A4IV in the constellation Aquarius with an absolute magnitude of 6.775. [1]

11 relations: Absolute magnitude, Aquarius (constellation), Constellation, Henry Draper Catalogue, Hipparcos, Light-year, Smithsonian Astrophysical Observatory Star Catalog, Solar mass, Stellar classification, Subgiant, Sun.

Absolute magnitude

Absolute magnitude is the measure of intrinsic brightness of a celestial object.

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Aquarius (constellation)

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

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Constellation

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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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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Light-year

A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances.

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Smithsonian Astrophysical Observatory Star Catalog

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

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Solar mass

The solar mass is a standard unit of mass in astronomy that is used to indicate the masses of other stars, as well as clusters, nebulae and galaxies.

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Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

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Subgiant

A subgiant is a star that is slightly brighter than a normal main-sequence (dwarf) star of the same spectral class, but not as bright as true giant stars.

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Sun

The Sun (in Greek: Helios, in Latin: Sol) is the star at the center of the Solar System and is by far the most important source of energy for life on Earth.

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References

[1] https://en.wikipedia.org/wiki/8_Aquarii

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