30 relations: Apparent magnitude, Bayer designation, Boss General Catalogue, Bright Star Catalogue, Canis Major, Constellation, Durchmusterung, EZ Canis Majoris, Flamsteed designation, Friedrich Wilhelm Argelander, Henry Draper Catalogue, Hipparcos, Johann Bayer, John Flamsteed, Luminosity, Monthly Notices of the Royal Astronomical Society, Nicolas-Louis de Lacaille, Nuclear fusion, Omicron Canis Majoris, Omicron2 Canis Majoris, Red supergiant star, Slow irregular variable, Smithsonian Astrophysical Observatory Star Catalog, Star, Stellar association, Stellar classification, Supergiant star, Type II supernova, Variable star, Virginia.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name.
Boss General Catalogue (GC, sometimes General Catalogue) is an astronomical catalogue containing 33,342 stars.
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.
Canis Major is a constellation in the southern celestial hemisphere.
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
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.
EZ Canis Majoris (also designated as EZ CMa or WR 6) is a Wolf-Rayet star in the constellation of Canis Major.
A Flamsteed designation is a combination of a number and constellation name that uniquely identifies most naked eye stars in the modern constellations visible from southern England.
Friedrich Wilhelm August Argelander (22 March 1799 – 17 February 1875) was a German astronomer.
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.
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).
John Flamsteed FRS (19 August 1646 – 31 December 1719) was an English astronomer and the first Astronomer Royal.
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
Abbé Nicolas-Louis de Lacaille, formerly sometimes spelled de la Caille, (15 March 1713 – 21 March 1762) was a French astronomer.
In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).
The Bayer designation Omicron Canis Majoris (ο CMa / ο Canis Majoris) is shared by two stars, in the constellation Canis Major.
Omicron2 Canis Majoris (ο² CMa, ο² Canis Majoris) is a star in the constellation Canis Major.
Red supergiants are stars with a supergiant luminosity class (Yerkes class I) of spectral type K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous.
A slow irregular variable (ascribed the GCVS types L, LB and LC) is a variable star that exhibit no or very poorly defined periodicity in their slowly changing light emissions.
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
A stellar association is a very loose star cluster, looser than both open clusters and globular clusters.
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
Supergiants are among the most massive and most luminous stars.
A Type II supernova (plural: supernovae or supernovas) results from the rapid collapse and violent explosion of a massive star.
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.
Virginia (officially the Commonwealth of Virginia) is a state in the Southeastern and Mid-Atlantic regions of the United States located between the Atlantic Coast and the Appalachian Mountains.