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10 Leonis Minoris, HD82635, HIP46952, HR3800

10 Leonis Minoris is a white to yellow star that can be located in the constellation of LeoMinor. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.

The Id of the star in the Yale Bright Star Catalogue is HR3800. 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.

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 +36d 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 -21.91 ± 0.15 miliarcseconds/year towards the north and 6.88 ± 0.24 miliarcseconds/year east if we saw them in the horizon. The Radial Velocity, that is the speed at which the star is moving away/towards us is -12.00000 km/s with an error of about 0.50 km/s .

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 star. The star is 7438.00000000 Parsecs from the Galactic Centre or terms of Light Years is 24260.0295267200000000s. 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 Radius has been calculated as being 8.20 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 5,702,569.10.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 8.62. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures. The star's Iron Abundance is -0.03 with an error value of 9.99 Fe/H with the Sun has a value of 1 to put it into context.

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 0.88 If you used the 2007 Parallax value, you would get an absolute magnitude of 0.77. 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 18.52 which gave the calculated distance to 10 Leonis Minoris as 176.11 light years away from Earth or 54.00 parsecs. It would take a spaceship travelling at the speed of light, 176.11 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 17.63 which put 10 Leonis Minoris at a distance of 185.00 light years or 56.72 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.

The star's Galacto-Centric Distance is 7,438.00 Parsecs or 24,260.03 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

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 Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

10 Leonis Minoris Facts

Alternative Names

Traditional/Proper Name10 Leonis Minoris
Flamsteed Name10 Leonis Minoris
Flamsteed Short Name10 LMi
Hipparcos Library I.D.46952
Yale Bright Star Catalogue (HR) Id3800
Bonner DurchmusterungBD+37 2004
Henry Draper Designation82635

Visual Facts

Star Type star
ConstellationLeo Minor
Absolute Magnitude0.88 / 0.77
Visual / Apparent Magnitude4.54
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)09h 34m 13.38
Declination (Dec.)+36d 23` 51.4
Galactic Latitude47.53 degrees
Galactic Longitude187.61 degrees
1997 Distance from Earth18.52 Parallax (milliarcseconds)
 176.11 Light Years
 54.00 Parsecs
2007 Revised Distance from Earth17.63 Parallax (milliarcseconds)
 185.00 Light Years
 56.72 Parsecs
Galacto-Centric Distance24,260.03 Light Years / 7,438.00 Parsecs
Proper Motion Dec.-21.91 ± 0.15 milliarcseconds/year
Proper Motion RA.6.88 ± 0.24 milliarcseconds/year
B-V Index0.91
Radial Velocity-12.00 ± 0.50 km/s
Iron Abundance-0.03 ± 9.99 Fe/H
Spectral TypeG8III
Colour(G) White to Yellow

Estimated Facts

Luminosity (x the Sun)113.0000000
Calculated Effective Temperature5,031 Kelvin

Sources and Links

SIMBAD SourceLink

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