Universe Guide

10 Leonis Minoris - HD82635 - HIP46952

10 Leonis Minoris is a white to yellow giant star that can be located in the constellation of LeoMinor. HIP46952 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD82635. 10 Leonis Minoris has alternative name(s), 10 Leonis Minoris , 10 LMi.

Location of 10 Leonis Minoris

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 10 Leonis Minoris, the location is 09h 34m 13.38 and +36 d 23 ` 51.4 .

Proper Motion of 10 Leonis Minoris

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 -022.00 ± 000.00 towards the north and 007.00 ± 000.00 east if we saw them in the horizon.

10 Leonis Minoris 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 113.0000000 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 10 Leonis Minoris

10 Leonis Minoris has a spectral type of G8III. This means the star is a white to yellow coloured giant star. The star has a B-V Colour Index of 0.91 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 5,031 Kelvin.

10 Leonis Minoris has been calculated as 8.01 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 5,572,756.48.km.

10 Leonis Minoris Apparent and Absolute Magnitudes

10 Leonis Minoris has an apparent magnitude of 4.54 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 0.93 If you used the 2007 Parallax value, you would get an absolute magnitude of 0.82. 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 10 Leonis Minoris

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 19.00 which gave the calculated distance to 10 Leonis Minoris as 171.66 light years away from Earth or 52.63 parsecs. In 2007, Hipparcos data was revised with a new parallax of 18.00 which put 10 Leonis Minoris at a distance of 181.20 light years or 55.56 parsecs.

It would take a spaceship travelling at the speed of light, 171.66 years using the 1997 distance to get there. We don't have the technology or spaceship that can carry people over that distance yet.

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.

10 Leonis Minoris Facts


Traditional Name10 Leonis Minoris
Short Name10 LMi
Alternative Name(s)10 Leonis Minoris
Hipparcos Library I.D.46952
Bonner DurchmusterungBD+37 2004
Henry Draper Designation82635
Celestial TypeStar
Absolute Magnitude0.93 / 0.82
Apparent Magnitude4.54
Right Ascension (R.A.)09h 34m 13.38
Declination (Dec.)+36 d 23 ` 51.4
1997 Distance from Earth19.00 Parallax (milliarcseconds)
 171.66 Light Years
 52.63 Parsecs
2007 Distance from Earth18.00 Parallax (milliarcseconds)
 181.20 Light Years
 55.56 Parsecs
Proper Motion Dec.-22.00 ± 0.00 milliarcseconds/year
Proper Motion RA.7.00 ± 0.00 milliarcseconds/year
B-V Index0.91
Spectral TypeG8III
Colour(G) White to Yellow
Star Typegiant star
Radius (x the Sun)8.01
Luminosity (x the Sun)113.0000000
Calculated Effective Temperature5,031 Kelvin


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