11 Canis Majoris

11 Canis Majoris is a single^[7] star in the southern constellation of Canis Major, the eleventh entry in John Flamsteed's catalogue of stars in that constellation. It has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of 5.28.^[2] The distance to this star is approximately 1,010 light years from the Sun based on parallax,^[1] and it is drifting further away with a radial velocity of around +15 km/s.^[4] It has an absolute magnitude of −1.63.^[2]

11 Canis Majoris

Observation data Epoch J2000      Equinox J2000
Constellation	Canis Major
Right ascension	06h 46m 51.09272s[1]
Declination	−14° 25′ 33.5042″[1]
Apparent magnitude (V)	5.28[2]
Characteristics
Spectral type	B8/9III[3]
B−V color index	−0.024±0.004[2]
Astrometry
Radial velocity (Rv)	+15.0±4.2[4] km/s
Proper motion (μ)	RA: −2.853±0.344[1] mas/yr Dec.: +8.514±0.363[1] mas/yr
Parallax (π)	3.2263±0.1847 mas[1]
Distance	1,010 ± 60 ly (310 ± 20 pc)
Absolute magnitude (MV)	−1.63[2]
Details
Luminosity	485.12[2] L☉
Temperature	11,540±181[5] K
Rotational velocity (v sin i)	130[5] km/s
Other designations
11 CMa, BD−14°1584, GC 8879, HD 49229, HIP 32492, HR 2504, SAO 151919[6]
Database references
SIMBAD	data

This star has a stellar classification of B8/9III,^[3] matching a B-type star that is in the giant stage. It has a high rate of spin with a projected rotational velocity of 130 km/s.^[5] The star is radiating 485^[2] times the luminosity of the Sun from its photosphere at an effective temperature of 11,540 K.^[5]