Gamma Canis Majoris information

γ Canis Majoris
	Location of γ Canis Majoris (circled)
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Canis Major
Right ascension	07h 03m 45.49305s
Declination	−15° 37′ 59.8300″
Apparent magnitude (V)	+4.10
Characteristics
Spectral type	B8II
U−B color index	−0.45
B−V color index	−0.13
Astrometry
Radial velocity (Rv)	+32.0 km/s
Proper motion (μ)	RA: −0.14 mas/yr ; Dec.: −11.36 mas/yr
Parallax (π)	7.38 ± 0.21 mas
Distance	440 ± 10 ly ; (136 ± 4 pc)
Absolute magnitude (MV)	−1.4
Details
Radius	5.6 R☉
Luminosity	715 L☉
Surface gravity (log g)	3.5 cgs
Temperature	13,596 K
Metallicity [Fe/H]	−0.24 dex
Rotation	6.16 d
Rotational velocity (v sin i)	30 km/s
Other designations
	Muliphein, Muliphen, 23 Canis Majoris, BD−15°1625, FK5 271, HD 53244, HR 2657, HIP 34045, SAO 152303
Database references
SIMBAD	data

Gamma Canis Majoris (γ Canis Majoris, abbreviated Gamma CMa, γ CMa), also named Muliphein /ˈmjuːlɪfeɪn/,^[11] is a star in the constellation of Canis Major. It is unclear exactly why this relatively faint star was given the 'gamma' designation, but possibly because it is in the same part of the constellation as Sirius (alpha) and Mirzam (beta).

^ ^a ^b ^c ^d ^e Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference apjss52_7 was invoked but never defined (see the help page).
^ Cite error: The named reference msom4 was invoked but never defined (see the help page).
^ Cite error: The named reference Kharchenko was invoked but never defined (see the help page).
^ Cite error: The named reference jaschek was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference mnras189_601 was invoked but never defined (see the help page).
^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
^ Cite error: The named reference apj145_141 was invoked but never defined (see the help page).
^ Cite error: The named reference aa547_A90 was invoked but never defined (see the help page).
^ Cite error: The named reference apj573_1_359 was invoked but never defined (see the help page).
^ "IAU Catalog of Star Names". Retrieved 28 July 2016.

[van_Leeuwen2007-1] Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).

[apjss52_7-2] Cite error: The named reference apjss52_7 was invoked but never defined (see the help page).

[msom4-3] Cite error: The named reference msom4 was invoked but never defined (see the help page).

[Kharchenko-4] Cite error: The named reference Kharchenko was invoked but never defined (see the help page).

[jaschek-5] Cite error: The named reference jaschek was invoked but never defined (see the help page).

[mnras189_601-6] Cite error: The named reference mnras189_601 was invoked but never defined (see the help page).

[Anderson2012-7] Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.

[apj145_141-8] Cite error: The named reference apj145_141 was invoked but never defined (see the help page).

[aa547_A90-9] Cite error: The named reference aa547_A90 was invoked but never defined (see the help page).

[apj573_1_359-10] Cite error: The named reference apj573_1_359 was invoked but never defined (see the help page).

[IAU-CSN-11] "IAU Catalog of Star Names". Retrieved 28 July 2016.

Observation data Epoch J2000.0 Equinox J2000.0
Location of γ Canis Majoris (circled)
Constellation	Canis Major
Right ascension	07^h 03^m 45.49305^s^[1]
Declination	−15° 37′ 59.8300″^[1]
Apparent magnitude (V)	+4.10^[2]
Characteristics
Spectral type	B8II^[3]
U−B color index	−0.45^[2]
B−V color index	−0.13^[2]
Astrometry

Radial velocity (R_v)	+32.0^[4] km/s
Proper motion (μ)	RA: −0.14^[1] mas/yr Dec.: −11.36^[1] mas/yr
Parallax (π)	7.38 ± 0.21 mas^[1]
Distance	440 ± 10 ly (136 ± 4 pc)
Absolute magnitude (M_V)	−1.4^[5]

Details

Radius	5.6^[6] `R`_☉
Luminosity	715^[7] `L`_☉
Surface gravity (log g)	3.5^[6] cgs
Temperature	13,596^[6] K
Metallicity [Fe/H]	−0.24^[8] dex
Rotation	6.16 d^[9]
Rotational velocity (v sin i)	30^[10] km/s

Other designations
Muliphein, Muliphen, 23 Canis Majoris, BD−15°1625, FK5 271, HD 53244, HR 2657, HIP 34045, SAO 152303
Database references
SIMBAD	data

Gamma Canis Majoris information

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