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Beta Canis Majoris information


Beta Canis Majoris
Diagram showing star positions and boundaries of the Canis Major constellation and its surroundings
Location of β Canis Majoris (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Canis Major
Right ascension 06h 22m 41.98535s[1]
Declination −17° 57′ 21.3073″[1]
Apparent magnitude (V) 1.985[2] (1.97 - 2.01[3])
Characteristics
Spectral type B1 II-III[4]
U−B color index −0.99[2]
B−V color index −0.235[2]
Variable type β Cep[5]
Astrometry
Radial velocity (Rv)+33.7[6] km/s
Proper motion (μ) RA: −3.23[1] mas/yr
Dec.: −0.78[1] mas/yr
Parallax (π)6.62 ± 0.22 mas[1]
Distance490 ± 20 ly
(151 ± 5 pc)
Absolute magnitude (MV)−4.1[7]
Details
Mass13.5 ± 0.5[8] M
Radius9.7 ± 1.3[9] R
Luminosity26600[9] L
Surface gravity (log g)3.79 ± 0.20[9] cgs
Temperature25,000[10] K
Metallicity [Fe/H]0.04 ± 0.10[8] dex
Rotational velocity (v sin i)31 ± 5[8] km/s
Age12.4 ± 0.7[8] Myr
Other designations
Mirzam, Murzim, Mirza,[11] 2 Canis Majoris, HR 2294, BD−17°1467, HD 44743, SAO 151428, FK5 243, HIP 30324, GC 8223, CCDM 06227-1757[12]
Database references
SIMBADdata

Beta Canis Majoris (β Canis Majoris, abbreviated Beta CMa, β CMa), also named Mirzam /ˈmɜːrzəm/,[13] is a star in the southern constellation of Canis Major, the "Great Dog", located at a distance of about 500 light-years (150 parsecs) from the Sun.[1] In the modern constellation it lies at the position of the dog's front leg.

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  13. ^ Cite error: The named reference IAU-CSN was invoked but never defined (see the help page).

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is located only 1.3 degrees east of Delta Canis Majoris. As with the rest of Canis Major, Delta Canis Majoris is most visible in winter skies in the northern...

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Beta Cephei variables, also known as Beta Canis Majoris stars, are variable stars that exhibit small rapid variations in their brightness due to pulsations...

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the night sky—Adhara (Epsilon Canis Majoris) shone at −3.99 around 4.7 million years ago, and Mirzam (Beta Canis Majoris) peaked at −3.65 around 4.42 million...

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UW Canis Majoris is a star in the constellation Canis Major. It is classified as a Beta Lyrae eclipsing contact binary and given the variable star designation...

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Zeta Canis Majoris

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Zeta Canis Majoris, or ζ Canis Majoris, also named Furud /ˈfjʊərəd/, is a binary star system in the southern constellation of Canis Major. This system...

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Lambda Canis Majoris

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Lambda Canis MajorisCanis Majoris) is a solitary, blue-white hued star in the constellation Canis Major. Lambda CMa is visible to the naked eye with...

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Gamma Canis MajorisCanis Majoris, abbreviated Gamma CMa, γ CMa), also named Muliphein /ˈmjuːlɪfeɪn/, is a star in the constellation of Canis Major...

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Tau Canis Majoris (τ CMa, τ Canis Majoris, 30 CMa) is a multiple star system in the constellation Canis Major. It is approximately 5,000 light years distant...

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it as a Beta Cephei variable. (At the time he actually identified it as a Beta Canis Majoris star, which was subsequently designated a Beta Cephei variable...

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Iota Canis Majoris

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Star 3.01 Psi Ursae Majoris Star 3.01 Gamma Gruis Star 3.01 Beta Capricorni Quintuple star system 3.02 2.97 Omicron2 Canis Majoris Star 3.03 2.88 Zeta...

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pulsations, binarity, and stellar rotation. Beta Cephei (β Cep) variables (sometimes called Beta Canis Majoris variables, especially in Europe) undergo short...

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15 Canis Majoris

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15 Canis Majoris is a variable star in the southern constellation of Canis Major, located roughly 1,200 light years away from the Sun. It has the variable...

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List of Arabic star names

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العُذْرَة Eta Canis Majoris Alula Australis, Alula Borealis (al-Qafzat) ul-Ūla' the First (Leap) القفزة الأولى Xi Ursae Majoris and Nu Ursae Majoris Alya al-Alyah...

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Lambda Scorpii

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S2CID 119231169. Balona, L. A.; Feast, M. W. (1975). "The luminosities of the beta Canis Majoris variables, the zero age main sequence and the distance of the Sco-Cen...

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FN Canis Majoris

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FN Canis Majoris is a binary star system in the southern constellation Canis Major, near the northern constellation border with Monoceros. It is dimly...

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Historical brightest stars

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Current distance Current magnitude Epsilon Canis Majoris ... −4,460,000 −4,700,000 −3.99 34 430 1.50 Beta Canis Majoris −4,460,000 −3,700,000 −4,420,000 −3.65...

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V2052 Ophiuchi

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Beeckmans, F.; Burger, M. (December 1977). "Ultraviolet observations of beta Canis Majoris stars with the TD-1 A satellite". Astronomy and Astrophysics. 61:...

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Epsilon Centauri

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2011-05-22 at the Wayback Machine Shobbrook, R. R. (1972). "Two new Beta Canis Majoris variables: epsilon Cen and delta Lup". Monthly Notices of the Royal...

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DL Crucis

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Beta Canis Majoris stars". Memoirs of the Royal Astronomical Society. 84: 101. Bibcode:1977MmRAS..84..101B. Jakate, S. M. (1979). "A search for Beta Cephei...

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Frank McClean

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the presence of oxygen in spectrographs from Beta Scorpii, Beta Canis Majoris, Beta Centauri, and Beta Crucis. His spectrographic survey of the stars...

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CX Canis Majoris

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CX CMa (CX Canis Majoris) is a blue variable star in the Canis Major constellation. Discovery of this variable is usually credited to German Astronomer...

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1 Vulpeculae

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Bibcode:2009yCat....102025S. Walker, M. F. (1952). "A search for stars of the beta Canis Majoris type". Astronomical Journal. 57: 227. Bibcode:1952AJ.....57..227W...

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