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28 relations: Apparent magnitude, Astronomical spectroscopy, Binary star, Boss General Catalogue, Bright Star Catalogue, Canis Major, Collinder catalog, Constellation, Durchmusterung, Dwarf nova, Epoch (astronomy), H II region, Henry Draper Catalogue, Hipparcos, Hydrogen, International Celestial Reference System, Lynds' Catalogue of Bright Nebulae, Neutron star, Omicron1 Canis Majoris, Open cluster, PPM Star Catalogue, Sh2-308, Sharpless catalog, Smithsonian Astrophysical Observatory Star Catalog, Ultraviolet, Variable star designation, Wolf–Rayet nebula, Wolf–Rayet star.
Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light and radio, which radiates from stars and other celestial objects.
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Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
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Boss General Catalogue
Boss General Catalogue (GC, sometimes General Catalogue) is an astronomical catalogue containing 33,342 stars.
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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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Canis Major
Canis Major is a constellation in the southern celestial hemisphere.
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Collinder catalog
In astronomy, the Collinder catalog is a catalog of 471 open clusters by Swedish astronomer Per Collinder.
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Constellation
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.
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Durchmusterung
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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Dwarf nova
A U Geminorum-type variable star, or dwarf nova (pl. novae) is a type of cataclysmic variable star consisting of a close binary star system in which one of the components is a white dwarf that accretes matter from its companion.
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Epoch (astronomy)
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.
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H II region
An H II region or HII region is a region of interstellar atomic hydrogen that is ionized.
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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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Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
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International Celestial Reference System
The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU).
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Lynds' Catalogue of Bright Nebulae
Lynds' Catalogue of Bright Nebulae is an astronomical catalogue of bright nebulae.
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Neutron star
A neutron star is the collapsed core of a large star which before collapse had a total of between 10 and 29 solar masses.
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Omicron1 Canis Majoris
Omicron1 Canis Majoris (ο1 CMa, ο1 Canis Majoris) is a red supergiant star in the constellation Canis Major.
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Open cluster
An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.
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PPM Star Catalogue
The PPM Star Catalogue (Positions and Proper Motions Star Catalogue) is the successor of the SAO Catalogue.
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Sh2-308
Sh2-308, also designated as Sharpless 308, RCW 11, or LBN 1052, is an emission nebula and HII region located near the center of the constellation Canis Major, composed of ionised hydrogen.
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Sharpless catalog
The Sharpless catalog is a list of 313 HII regions (emission nebulae), intended to be comprehensive north of declination −27°.
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Smithsonian Astrophysical Observatory Star Catalog
The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.
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Ultraviolet
Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.
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Variable star designation
Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.
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Wolf–Rayet nebula
A Wolf–Rayet nebula is a nebula which surrounds a Wolf–Rayet star.
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Wolf–Rayet star
Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of highly ionised helium and nitrogen or carbon.
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Redirects here:
CD -23 4553, CD −23 4553, CD-23 4553, CD−23 4553, CPD -23 1588, CPD −23 1588, CPD-23 1588, CPD−23 1588, EZ CMa, GC 9061, HD 50896, HIP 33165, HR 2583, PPM 251223, SAO 172546, WR 6.
References
[1] https://en.wikipedia.org/wiki/EZ_Canis_Majoris
