12 Persei is a blue to white main sequence dwarf star that can be located in the constellation of Perseus. 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 Persei has alternative name(s), 12 Persei.
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 Persei, the location is 02h 42m 14.93 and +40 d 11 ` 39.8 .
12 Persei has a spectral type of F9V. This means the star is (F) blue to white coloured (V) main sequence (dwarf star). 12 Persei lies at a distance of 80.49 light years away from our Sun and our planet Earth or to put it another way, 24.53 parsecs away from the Sun.
12 Persei has an apparent magnitude of 4.91 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 12 Persei has an absolute magnitude of 2.95 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 star's temperature has been calculated at being about 5900 Kelvin. (Based on the b-v value of 0.58 and the lookup on SDSS.)
12 Persei Radius has been calculated as being 2.30 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,598,287.39. km.
|Traditional Name||12 Persei|
|Alternative Name(s)||12 Persei|
|Hipparcos Library I.D.||12623|
|Henry Draper Designation||16739|
|Right Ascension (R.A.)||02h 42m 14.93|
|Declination (Dec.)||+40 d 11 ` 39.8|
|Distance from the Sun / Earth||80.49 Light Years|
|Colour||(F) blue to white|
|Star Type||(IV) subgiant.|
|Variable Star Class||Constant, non-variable|
|Radius (x the Sun)||2.30|
|Calculated Temperature Range||6,000.00 - 7,500.00|