13 relations: Apparent magnitude, Aquarius (constellation), Bright Star Catalogue, Catalog of Components of Double and Multiple Stars, Constellation, Declination, Durchmusterung, Henry Draper Catalogue, Right ascension, Smithsonian Astrophysical Observatory Star Catalog, Star system, Stellar classification, Washington Double Star Catalog.
The apparent magnitude (m) of a celestial object is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere.
New!!: 1 Aquarii and Apparent magnitude ·
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces.
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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The Catalog of Components of Double and Multiple Stars, or CCDM, is an astrometric star catalogue of double and multiple stars.
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, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.
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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 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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Right ascension (abbreviated RA; symbol α) is the angular distance measured eastward along the celestial equator from the vernal equinox to the hour circle of the point in question.
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The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.
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In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
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The Washington Double Star Catalog, or WDS, is a catalog of double stars, maintained at the United States Naval Observatory.