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HD 13189, HIP10085

HD 13189 is a orange to red star that can be located in the constellation of Triangulum. The star can not be seen by the naked eye, you need a telescope to see it.

HIP10085 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD13189. HD 13189 has at least 1 Extrasolar Planets believed to be in orbit around the star.

Location of HD 13189

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 HD 13189, the location is 02h 09m 40.17 and +32d 18` 59.1 .

Proper Motion of HD 13189

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 5.32 ± 0.42 miliarcseconds/year towards the north and 2.62 ± 0.73 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 25.39000 km/s with an error of about 0.28 km/s .

Physical Properties (Colour, Temperature, Mass, Radius) of HD 13189

HD 13189 has a spectral type of K2. This means the star is a orange to red star. The star has a B-V Colour Index of 1.46 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,096 Kelvin.

HD 13189 Radius has been calculated as being 105.25 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 73,232,683.14.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 31.93. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures. The star's solar mass is 4.50 times that of the Sun's. The Sun's Mass is 1,989,100,000,000,000,000,000 billion kg. which to calculate using this website is too large. To give idea of size, the Sun is 99.86% the mass of the solar system. The star's Iron Abundance is -0.36 with an error value of 0.03 Fe/H with the Sun has a value of 1 to put it into context.

HD 13189 Apparent and Absolute Magnitudes

HD 13189 has an apparent magnitude of 7.57 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 -3.77 If you used the 2007 Parallax value, you would get an absolute magnitude of -1.18. 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 HD 13189

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.54 which gave the calculated distance to HD 13189 as 6040.06 light years away from Earth or 1851.85 parsecs. It would take a spaceship travelling at the speed of light, 6040.06 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 1.78 which put HD 13189 at a distance of 1832.38 light years or 561.80 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 Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

HD 13189 Facts

Alternative Names

Traditional/Proper NameHD 13189
Hipparcos Library I.D.10085
Bonner DurchmusterungBD+31 370
Henry Draper Designation13189

Visual Facts

Star Type star
Absolute Magnitude-3.77 / -1.18
Visual / Apparent Magnitude7.57
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)02h 09m 40.17
Declination (Dec.)+32d 18` 59.1
Galactic Latitude-27.71 degrees
Galactic Longitude141.57 degrees
1997 Distance from Earth0.54 Parallax (milliarcseconds)
 6040.06 Light Years
 1851.85 Parsecs
2007 Revised Distance from Earth1.78 Parallax (milliarcseconds)
 1832.38 Light Years
 561.80 Parsecs
Proper Motion Dec.5.32 ± 0.42 milliarcseconds/year
Proper Motion RA.2.62 ± 0.73 milliarcseconds/year
B-V Index1.46
Radial Velocity25.39 ± 0.28 km/s
Iron Abundance-0.36 ± 0.03 Fe/H
Spectral TypeK2
Colour(K) Orange to Red

Companions (Multi-Star and Exoplanets) Facts

Exoplanet Count1

Estimated Facts

Calculated Effective Temperature4,096 Kelvin
Mass Compared to the Sun4.50

Sources and Links

SIMBAD SourceLink

Related Stars

List of Extrasolar Planets orbiting HD 13189

NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastronInclination
HD 13189 bConfirmed6.0471.6000.2720051.85160.7002005.000

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