Universe Guide

10 Lacertae - HD214680 - HIP111841

10 Lacertae is a blue main sequence dwarf star that can be located in the constellation of Lacerta. HIP111841 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD214680. 10 Lacertae has alternative name(s), 10 Lacertae , 10 Lac.

Location of 10 Lacertae

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 Lacertae, the location is 22h 39m 15.68 and +39d03`01.0 .

Proper Motion of 10 Lacertae

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 -005.46 ± 000.14 towards the north and -000.32 ± 000.22 east if we saw them in the horizon.

10 Lacertae 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 55000.0000000 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 Lacertae

10 Lacertae has a spectral type of O9V. This means the star is a blue coloured main sequence dwarf star. The star has a B-V Colour Index of -0.2 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 16,954 Kelvin.

10 Lacertae has been calculated as 0.74 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 518,120.09.km.

10 Lacertae Apparent and Absolute Magnitudes

10 Lacertae has an apparent magnitude of 4.89 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 -2.67 If you used the 2007 Parallax value, you would get an absolute magnitude of -3.73. 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 Lacertae

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 3.08 which gave the calculated distance to 10 Lacertae as 1058.97 light years away from Earth or 324.68 parsecs. In 2007, Hipparcos data was revised with a new parallax of 1.89 which put 10 Lacertae at a distance of 1725.73 light years or 529.10 parsecs.

It would take a spaceship travelling at the speed of light, 1058.97 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 Lacertae Facts

Traditional Name10 Lacertae
Short Name10 Lac
Alternative Name(s)10 Lacertae
Hipparcos Library I.D.111841
Bonner DurchmusterungBD+38 4826
Henry Draper Designation214680
Celestial TypeStar
Absolute Magnitude-2.67 / -3.73
Apparent Magnitude4.89
Right Ascension (R.A.)22h 39m 15.68
Declination (Dec.)+39d03`01.0
1997 Distance from Earth3.08 Parallax (milliarcseconds)
 1058.97 Light Years
 324.68 Parsecs
2007 Distance from Earth1.89 Parallax (milliarcseconds)
 1725.73 Light Years
 529.10 Parsecs
Proper Motion Dec.-5.46 ± 0.14 milliarcseconds/year
Proper Motion RA.-0.32 ± 0.22 milliarcseconds/year
B-V Index-0.20
Spectral TypeO9V
Colour(O) blue
Star Typemain sequence dwarf star
Radius (x the Sun)0.74
Luminosity (x the Sun)55,000.0000000
Calculated Effective Temperature16,954 Kelvin

Location of 10 Lacertae in Lacerta

10 Lacertae Location in Lacerta

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

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