Universe Guide

12 Trianguli - HD15257 - HIP11486

12 Trianguli is a blue to white giant star that can be located in the constellation of Triangulum. 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 Trianguli has alternative name(s), 12 Trianguli.

Location of 12 Trianguli

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 Trianguli, the location is 02h 28m 09.99 and +29 d 40 ` 10.3 .

Physical Properties/View of 12 Trianguli

12 Trianguli has a spectral type of F0III. This means the star is (F) blue to white coloured (III) giant. 12 Trianguli lies at a distance of 155.24 light years away from our Sun and our planet Earth or to put it another way, 47.52 parsecs away from the Sun.

12 Trianguli has an apparent magnitude of 5.29 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 12 Trianguli has an absolute magnitude of 1.90 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 6000 and 7500 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 Trianguli Facts


Traditional Name12 Trianguli
Alternative Name(s)12 Trianguli
Hipparcos Library I.D.11486
Henry Draper Designation15257
Celestial TypeStar
Absolute Magnitude1.90
Apparent Magnitude5.29
Right Ascension (R.A.)02h 28m 09.99
Declination (Dec.)+29 d 40 ` 10.3
Distance from the Sun / Earth155.24 Light Years
Spectral TypeF0III
Colour (F) blue to white
Star Type (III) giant.
Variable Star ClassConstant, non-variable
Calculated Temperature Range6,000.00 - 7,500.00


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