Universe Guide

10 Herculis - HD145713 - HIP79349

10 Herculis is a red pulsating giant star that can be located in the constellation of Hercules. 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 Herculis has alternative name(s), 10 Herculis.

Location of 10 Herculis

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 Herculis, the location is 16h 11m 38.05 and +23 d 29 ` 41.4 .

Physical Properties/View of 10 Herculis

10 Herculis has a spectral type of M4IIIa. This means the star is (M) red coloured (III) giant. 10 Herculis lies at a distance of 566.26 light years away from our Sun and our planet Earth or to put it another way, 173.53 parsecs away from the Sun.

10 Herculis has an apparent magnitude of 5.74 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. 10 Herculis has an absolute magnitude of -0.46 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

Variable Type of 10 Herculis

The star is a pulsating Slow Irregular 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. This is a some uncertainty as to the type but the type mentioned is the current variable star classification for this star. 10 Herculis 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.

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 Herculis Facts


Traditional Name10 Herculis
Short NameLQ Her
Alternative Name(s)10 Herculis
Hipparcos Library I.D.79349
Henry Draper Designation145713
Celestial TypeStar
Absolute Magnitude-0.46
Apparent Magnitude5.74
Right Ascension (R.A.)16h 11m 38.05
Declination (Dec.)+23 d 29 ` 41.4
Distance from the Sun / Earth566.26 Light Years
Spectral TypeM4IIIa
Colour (M) red
Star Type (III) giant.
Variable Star ClassPulsating
Variable Star TypeSlow Irregular probably
Variable Magnitude Range (Brighter - Dimmer)6.000 - 6.000
Calculated Temperature Range2,400.00 - 3,700.00


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