Universe Guide

12 Cephei - HD207528 - HIP107586

12 Cephei is a red giant star that can be located in the constellation of Cepheus. 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 Cephei has alternative name(s), 12 Cephei.

Location of 12 Cephei

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 Cephei, the location is 21h 47m 25.31 and +60 d 41 ` 33.7 .

Physical Properties/View of 12 Cephei

12 Cephei has a spectral type of M1III. This means the star is (M) red coloured (III) giant. 12 Cephei lies at a distance of 467.28 light years away from our Sun and our planet Earth or to put it another way, 143.18 parsecs away from the Sun.

12 Cephei has an apparent magnitude of 5.53 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 12 Cephei has an absolute magnitude of -0.25 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 2400 and 3700 based on the Class Type and lookup at Wikipedia-Stellar Classification

Source of Information

The source of the information came from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years.

12 Cephei Facts


Traditional Name12 Cephei
Alternative Name(s)12 Cephei
Hipparcos Library I.D.107586
Henry Draper Designation207528
Celestial TypeStar
Absolute Magnitude-0.25
Apparent Magnitude5.53
Right Ascension (R.A.)21h 47m 25.31
Declination (Dec.)+60 d 41 ` 33.7
Distance from the Sun / Earth467.28 Light Years
Spectral TypeM1III
Colour (M) red
Star Type (III) giant.
Variable Star ClassConstant, non-variable
Calculated Temperature Range2,400.00 - 3,700.00


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