Universe Guide

10 Arietis - HD12558 - HIP9621

10 Arietis is a blue to white subgiant star that can be located in the constellation of Aries. 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. 10 Arietis has alternative name(s), 10 Arietis. 10 Arietis is a multiple star system with 2 stars orbiting in its solar system.

Location of 10 Arietis

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 10 Arietis, the location is 02h 03m 39.26 and +25 d 56 ` 07.6 .

Physical Properties/View of 10 Arietis

10 Arietis has a spectral type of F8IV. This means the star is (F) blue to white coloured (IV) subgiant. 10 Arietis lies at a distance of 172.57 light years away from our Sun and our planet Earth or to put it another way, 52.73 parsecs away from the Sun.

10 Arietis has an apparent magnitude of 5.64 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 10 Arietis has an absolute magnitude of 2.02 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.

10 Arietis Facts


Traditional Name10 Arietis
Alternative Name(s)10 Arietis
Hipparcos Library I.D.9621
Henry Draper Designation12558
Celestial TypeStar
Absolute Magnitude2.02
Apparent Magnitude5.64
Right Ascension (R.A.)02h 03m 39.26
Declination (Dec.)+25 d 56 ` 07.6
Distance from the Sun / Earth172.57 Light Years
Spectral TypeF8IV
Colour (F) blue to white
Star Type (VI) subdwarf star.
Stars in Solar System2
Variable Star ClassConstant, non-variable
Calculated Temperature Range6,000.00 - 7,500.00


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