12 Canis Majoris is a blue rotating giant star that can be located in the constellation of CanisMajor. HIP is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD. 12 Canis Majoris has alternative name(s), 12 Canis Majoris.
The location of the star in the galaxy is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is from celestial equator. The Declination is how up or down compared to the celestial equator and is expressed in degrees. For 12 Canis Majoris, the location is 06h 47m 01.49 and -21 d 00 ` 55.5 .
12 Canis Majoris has a spectral type of B7II/III. This means the star is (B) blue coloured (III) giant. 12 Canis Majoris lies at a distance of 668.37 light years away from our Sun and our planet Earth or to put it another way, 204.81 parsecs away from the Sun.
12 Canis Majoris has an apparent magnitude of 6.07 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 12 Canis Majoris has an absolute magnitude of -0.49 which is the apparent magnitude of an object if it were 32.6 light years away or 10 parsecs from Earth. Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number. The stars temperature has been calculated at between 10000 and 30000 based on the Class Type and lookup at Wikipedia-Stellar Classification
The star is a rotating Alpha2 Canum Venaticorum variable type which means that its size changes over time. The Variable Type is usually named after the first star of that type to be spotted. 12 Canis Majoris brightness ranges from a magnitude of 6.000 to a magnitude of 6.000 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 2.0 days (variability).
|Traditional Name||12 Canis Majoris|
|Short Name||HK CMa|
|Alternative Name(s)||12 Canis Majoris|
|Hipparcos Library I.D.||32504|
|Henry Draper Designation||49333|
|Right Ascension (R.A.)||06h 47m 01.49|
|Declination (Dec.)||-21 d 00 ` 55.5|
|Distance from the Sun / Earth||668.37 Light Years|
|Star Type||(III) giant.|
|Variable Star Class||Rotating|
|Variable Star Type||Alpha2 Canum Venaticorum|
|Mean Variability Period in Days||2.000|
|Variable Magnitude Range (Brighter - Dimmer)||6.000 - 6.000|
|Calculated Temperature Range||10,000.00 - 30,000.00|