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48 Virginis - HD113459 - HIP63750

48 Virginis is a blue to white main sequence dwarf star that can be located in the constellation of Virgo. HIP63750 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD113459. The Id of the star in the Gould Star Catalogue is 107. 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. 48 Virginis has alternative name(s), 48 Virginis , 48 Vir. 48 Virginis is a multiple star system with 2 stars orbiting in its solar system.

Location of 48 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 along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the star is compared to the celestial equator and is expressed in degrees. For 48 Virginis, the location is 13h 03m 54.44 and -03d39`47.0 .

Proper Motion of 48 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 -040.68 ± 001.04 towards the north and -035.46 ± 001.56 east if we saw them in the horizon.

48 Virginis Luminosity

Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. The figure of 5.0000000 that I have given is based on the Spectral Types page that I have found on the Internet. You might find a different figure, one that may have been calculated rather than generalised that I have done. The figure is always the amount times the luminosity of the Sun. It is an imprecise figure because of a number of factors including but not limited to whether the star is a variable star and distance.

Physical Properties (Colour, Temperature, Radius) of 48 Virginis

48 Virginis has a spectral type of F0V. This means the star is a blue to white main sequence dwarf star. The star has a B-V Colour Index of 0.29 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 7,270 Kelvin.

48 Virginis has been calculated as 3.48 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 2,422,745.62.km.

48 Virginis Apparent and Absolute Magnitudes

48 Virginis has an apparent magnitude of 6.62 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 1.14 If you used the 2007 Parallax value, you would get an absolute magnitude of 0.67. 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 48 Virginis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 8.00 which gave the calculated distance to 48 Virginis as 407.70 light years away from Earth or 125 parsecs. It would take a spaceship travelling at the speed of light, 407.70 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

In 2007, Hipparcos data was revised with a new parallax of 6.45 which put 48 Virginis at a distance of 505.68 light years or 155.04 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated.

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.

48 Virginis Facts

Alternative Names

Traditional Name48 Virginis
Short Name48 Vir
Alternative Name(s)48 Virginis
Hipparcos Library I.D.63750
Bonner DurchmusterungBD-02 3622
Gould I.D.107
Henry Draper Designation113459

Visual Facts

Star Typemain sequence dwarf star
Absolute Magnitude1.14 / 0.67
Apparent Magnitude6.62
Right Ascension (R.A.)13h 03m 54.44
Declination (Dec.)-03d39`47.0
1997 Distance from Earth8.00 Parallax (milliarcseconds)
 407.70 Light Years
 125 Parsecs
2007 Revised Distance from Earth6.45 Parallax (milliarcseconds)
 505.68 Light Years
 155.04 Parsecs
Proper Motion Dec.-40.68 ± 1.04 milliarcseconds/year
Proper Motion RA.-35.46 ± 1.56 milliarcseconds/year
B-V Index0.29
Spectral TypeF0V
Colour(F) blue to white
Stars in Solar System2

Estimated Facts

Radius (x the Sun)3.48
Luminosity (x the Sun)5.0000000
Calculated Effective Temperature7,270 Kelvin

Sources and Links

SIMBAD SourceLink

Related Stars

Multi-Star System

The star has been identified as being a multi-star system, one in which there is at least one star in close orbit to another star or two or more stars orbiting a central point. The stars may be of equal mass, unequal mass where one star is stronger than the other or be in groups orbiting a central point which doesn't necessarily have to be a star. More information can be found on my dedicated multiple star systems page. The source of the info is Simbad. The file is dated 2000 so any differences between this and any other source will be down to the actual source from where the information came from.


Proper Motion mas/yr
H.D. IdB.D. IdStar CodeMagnitudeR.A.Dec.SpectrumColourYear
113459-02 3622.0A7.10000-38.00000-37.00000F0Yellow/White
B7.400001960

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