Universe Guide

104 Virginis - HD126722 - HIP70680

104 Virginis is a blue subgiant star that can be located in the constellation of Virgo. HIP70680 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD126722. The Id of the star in the Gould Star Catalogue is 245. Stars in the southern hemisphere are more likely to have a Gould Id than the northern hemisphere. For example, there are no Gould classified stars in Ursa Major. 104 Virginis has alternative name(s), 104 Virginis , 104 Vir.

Location of 104 Virginis

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 104 Virginis, the location is 14h 27m 24.42 and -06 d 07 ` 12.7 .

Proper Motion of 104 Virginis

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving -058.00 ± 000.00 towards the north and -064.00 ± 000.00 east if we saw them in the horizon.

Physical Properties (Colour, Temperature, Radius) of 104 Virginis

104 Virginis has a spectral type of A2IV. This means the star is a blue coloured subgiant star. The star has a B-V Colour Index of 0.09 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 8,538 Kelvin.

104 Virginis has been calculated as 1.77 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,232,130.70.km.

104 Virginis Apparent and Absolute Magnitudes

104 Virginis has an apparent magnitude of 6.18 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. If you used the 1997 Parallax value, you would get an absolute magnitude of 1.91 If you used the 2007 Parallax value, you would get an absolute magnitude of 1.75. 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.

Distance to 104 Virginis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 14.00 which gave the calculated distance to 104 Virginis as 232.97 light years away from us or 71.43 parsecs. In 2007, Hipparcos data was revised with a new parallax of 13.00 which put 104 Virginis at a distance of 250.89 light years or 76.92 parsecs.

Source of Information

The source of the information if it has a Hip I.D. is 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. The items in red are values that I've calculated so they could well be wrong. Information regarding Stellar Age, Metallicity or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

104 Virginis Facts


Traditional Name104 Virginis
Short Name104 Vir
Alternative Name(s)104 Virginis
Hipparcos Library I.D.70680
Gould I.D.245
Henry Draper Designation126722
Celestial TypeStar
Absolute Magnitude1.91 / 1.75
Apparent Magnitude6.18
Right Ascension (R.A.)14h 27m 24.42
Declination (Dec.)-06 d 07 ` 12.7
1997 Distance14.00 Parallax (milliarcseconds)
 232.97 Light Years
 71.43 Parsecs
2007 Distance13.00 Parallax (milliarcseconds)
 250.89 Light Years
 76.92 Parsecs
Proper Motion Dec.-58.00 ± 0.00 milliarcseconds/year
Proper Motion RA.-64.00 ± 0.00 milliarcseconds/year
B-V Index0.09
Spectral TypeA2IV
Colour(A) blue
Star Typesubgiant star
Radius (x the Sun)1.77
Calculated Effective Temperature8,538 Kelvin


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