Mu Canis Majoris (μ Canis Majoris) is a binary star[2] system in the southern constellation of Canis Major. The pair can be located a little to the southwest of the point midway between Gamma and Theta Canis Majoris,[11] and the components can be split with a small telescope.[12] The system is faintly visible to the naked eye with an apparent visual magnitude of 5.12.[2] Based upon an annual parallax shift of just 2.62 mas as seen from Earth,[1] this system is located roughly 1,200 light years from the Sun.
Grotius assigned the name Isis to this star, but the name, now obsolete, belonged rather to Gamma Canis Majoris.[13]
As of 2011, the pair had an angular separation of 2.77 arc seconds along a position angle of 343.9°.[14] The orange-hued primary member, component A, is an evolved K-type giant star with a stellar classification of K2/3 III[3] and a visual magnitude of 5.27.[2] The base magnitude 7.32[2] companion, component B, is a hybrid B/A-type main-sequence star with a class of B9/A0 V.[3]
The system has two visual companions. As of 2008, magnitude 10.32 component C lies at an angular separation of 86.90″, while magnitude 10.64 component D is at a separation of 105.0″.[15] Mu CMa should not be confused with the 9th magnitude variable star MU CMa located near NGC 2360.[16]
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MuCanisMajoris (μ CanisMajoris) is a binary star system in the southern constellation of Canis Major. The pair can be located a little to the southwest...
stars of great distance and high luminosity. At magnitude 1.5, Epsilon CanisMajoris (Adhara) is the second-brightest star of the constellation and the brightest...
VY CanisMajoris (abbreviated to VY CMa) is an extreme oxygen-rich red hypergiant or red supergiant (O-rich RHG or RSG) and pulsating variable star 1...
within two arc-minutes of Mu Cephei, and listed in multiple star catalogues. List of most massive stars VV Cephei VY CanisMajoris Perryman, M. A. C.; et al...
red supergiants, such as Antares A, Betelgeuse, VV Cephei A, Mu Cephei, VY CanisMajoris, and WOH G64. Nevertheless, its size remains uncertain until...
type B2Ia Omicron² CanisMajoris, B-type supergiant, spectral type B3Ia Lambda Cephei, B-type supergiant, specteal type O6.5I(n)fp Mu Sagittarii, B-type...
M type spectra, the largest known stars: Mu Cephei VV Cephei A NML Cygni RW Cephei S Persei VY CanisMajoris - potentially the largest star in the Milky...
Binary star system 1.40 Regulus Quadruple star system 1.50 Epsilon CanisMajoris Binary star system 1.58 Castor Sextenary star system Brightest sextuple...
العُذْرَة Eta CanisMajoris Alula Australis, Alula Borealis (al-Qafzat) ul-Ūla' the First (Leap) القفزة الأولى Xi Ursae Majoris and Nu Ursae Majoris Alya al-Alyah...
examples of stars in this mass range include Antares, Spica, Gamma Velorum, Mu Cephei, and members of the Quintuplet Cluster. Type Ia supernova progenitors...
sometimes used for the most extended and unstable red supergiants like VY CanisMajoris and NML Cygni. The "red" part of "red supergiant" refers to the cool...
similar to those seen in the supernova SN 1987A. MWC 922 itself is an FS CanisMajoris variable, meaning that it is a Be star containing exceptionally bright...
"Fundamental properties and atmospheric structure of the red supergiant VY CanisMajoris based on VLTI/AMBER spectro-interferometry". Astronomy & Astrophysics...
Antares is dwarfed by even larger red supergiants, such as VY CanisMajoris or VV Cephei A and Mu Cephei. Antares, like the similarly sized red supergiant...
as AA Tauri as well as TW Hydrae, IRC +10216 and APM 08279+5255, VY CanisMajoris and S Persei. Liquid water is present on Earth, covering 71% of its...
2019 and the dimming events seen in the historical light curve of VY CanisMajoris. Spectra taken by an amateur astronomer show the appearance of several...
galactic red supergiants, such as VV Cephei A and the peculiar star VY CanisMajoris at 1,200–1,900 R☉ and more than 3,000 R☉. V354 Cephei, based on a MARCS...
C.H.; Spears, D.L. (1977). "Spatial heterodyne tnterferometry of VY CanisMajoris, Alpha Orionis, Alpha Scorpii, and R Leonis at 11 microns". Astrophysical...
appellation Zakariya al-Qazwini had applied to the pair of stars Lambda and Mu Sagittarii; it was often not clear on old star maps which name was intended...
middle name of Virgil Ivan "Gus" Grissom. Dnoces for the star Iota Ursae Majoris and which is Second spelled backwards, alluding to Edward Higgins White...
large size. Red supergiants like Betelgeuse, Antares, Mu Cephei, VV Cephei, and VY CanisMajoris one of the biggest stars in the Universe, are the biggest...
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