Universe Guide
AliensAliensConstellationsTelevision and Films ListFact ListGames ListWarcraftSearchTwitterFacebook

HomeFactsConstellationsLeo Minor

11 Leonis Minoris, HD82885, HIP47080, HR3815

11 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 HR3815. HIP47080 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD82885. The Gliese ID of the star is GL 356A. The star was part of the original catalogue devised by German Astronomer Wilheim Gliese of stars located within 20 parsecs of Earth. Ref : Star Names.

Location of 11 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 11 Leonis Minoris, the location is 09h 35m 40.03 and +35d 48` 38.8 .

Proper Motion of 11 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 -259.81 ± 0.17 miliarcseconds/year towards the north and -728.71 ± 0.32 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 14.40000 km/s with an error of about 0.09 km/s .

Physical Properties (Colour, Temperature, Radius) of 11 Leonis Minoris

11 Leonis Minoris has a spectral type of G8IV-V. This means the star is a white to yellow star. The star is 7408.00000000 Parsecs from the Galactic Centre or terms of Light Years is 24162.1805235200000000s. The star has a B-V Colour Index of 0.77 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 5,364 Kelvin.

11 Leonis Minoris Radius has been calculated as being 1.00 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 698,810.84.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 1.02. 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 0.32 with an error value of 9.99 Fe/H with the Sun has a value of 1 to put it into context.

11 Leonis Minoris Apparent and Absolute Magnitudes

11 Leonis Minoris has an apparent magnitude of 5.40 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 5.16 If you used the 2007 Parallax value, you would get an absolute magnitude of 5.12. 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 11 Leonis Minoris

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 89.45 which gave the calculated distance to 11 Leonis Minoris as 36.46 light years away from Earth or 11.18 parsecs. It would take a spaceship travelling at the speed of light, 36.46 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 87.96 which put 11 Leonis Minoris at a distance of 37.08 light years or 11.37 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 7,408.00 Parsecs or 24,162.18 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.

11 Leonis Minoris Facts

Alternative Names

Traditional/Proper Name11 Leonis Minoris
Flamsteed Name11 Leonis Minoris
Flamsteed Short Name11 LMi
Hipparcos Library I.D.47080
Yale Bright Star Catalogue (HR) Id3815
Bonner DurchmusterungBD+36 1979
Gliese IDGL 356A
Henry Draper Designation82885

Visual Facts

Star Type star
ConstellationLeo Minor
Absolute Magnitude5.16 / 5.12
Visual / Apparent Magnitude5.40
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)09h 35m 40.03
Declination (Dec.)+35d 48` 38.8
Galactic Latitude47.80 degrees
Galactic Longitude188.50 degrees
1997 Distance from Earth89.45 Parallax (milliarcseconds)
 36.46 Light Years
 11.18 Parsecs
2007 Revised Distance from Earth87.96 Parallax (milliarcseconds)
 37.08 Light Years
 11.37 Parsecs
Galacto-Centric Distance24,162.18 Light Years / 7,408.00 Parsecs
Proper Motion Dec.-259.81 ± 0.17 milliarcseconds/year
Proper Motion RA.-728.71 ± 0.32 milliarcseconds/year
B-V Index0.77
Radial Velocity14.40 ± 0.09 km/s
Iron Abundance0.32 ± 9.99 Fe/H
Spectral TypeG8IV-V
Colour(G) White to Yellow

Estimated Facts

Calculated Effective Temperature5,364 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
82885+36 1979.0A5.50000-675.00000-211.00000K0Orange

Location of 11 Leonis Minoris in Leo Minor

11 Leonis Minoris Location in Leo Minor

The map was generated using Night Vision, an awesome free application by Brian Simpson.

Add a Comment

Email: (Optional)