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HD 11964 - HIP9094

HD 11964 is a white to yellow star that can be located in the constellation of Cetus. It is calculated at being 10.000 Billion Years old. This information comes from ExoPlanet. HIP9094 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD11964. The Id of the star in the Gould Star Catalogue is 191. Stars in the southern hemisphere are more likely to have a Gould Id than the northern hemisphere. For example, there are no Gould classified stars in Ursa Major. HD 11964 has at least 2 Extrasolar Planets believed to be in orbit around the star.

Location of HD 11964

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 11964, the location is 01h 57m 09.82 and -10d14`30.6 .

Proper Motion of HD 11964

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 -242.39 ± 000.41 towards the north and -366.23 ± 000.60 east if we saw them in the horizon.

Physical Properties (Colour, Temperature, Metallicity, Age, Mass, Radius) of HD 11964

HD 11964 has a spectral type of G5. This means the star is a white to yellow star. The star has a B-V Colour Index of 0.81 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 5,399 Kelvin.

HD 11964 has been calculated as 1.89 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,314,390.05.km. The star's solar mass is 1.00 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 metallicity is 0.170000, this value is the fractional amount of the star that is not Hydrogen (X) or Helium (Y). An older star would have a high metallicity whereas a new star would have a lower one.

The star is believed to be about 10.00 Billion years old. To put in context, the Sun is believed to be about five billion years old and the Universe is about 13.8 billion years old.

HD 11964 Apparent and Absolute Magnitudes

HD 11964 has an apparent magnitude of 6.42 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 3.76 If you used the 2007 Parallax value, you would get an absolute magnitude of 3.84. 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 11964

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 29.43 which gave the calculated distance to HD 11964 as 110.83 light years away from Earth or 33.98 parsecs. It would take a spaceship travelling at the speed of light, 110.83 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 30.44 which put HD 11964 at a distance of 107.15 light years or 32.85 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 Stellar Age, Metallicity or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

HD 11964 Facts

Alternative Names

Traditional NameHD 11964
Hipparcos Library I.D.9094
Bonner DurchmusterungBD-10 403
Gould I.D.191
Henry Draper Designation11964

Visual Facts

Star Type star
Age10.000 Billions of Years
Metalicity0.1700
Absolute Magnitude3.76 / 3.84
Apparent Magnitude6.42
Right Ascension (R.A.)01h 57m 09.82
Declination (Dec.)-10d14`30.6
1997 Distance from Earth29.43 Parallax (milliarcseconds)
 110.83 Light Years
 33.98 Parsecs
2007 Revised Distance from Earth30.44 Parallax (milliarcseconds)
 107.15 Light Years
 32.85 Parsecs
Proper Motion Dec.-242.39 ± 0.41 milliarcseconds/year
Proper Motion RA.-366.23 ± 0.60 milliarcseconds/year
B-V Index0.81
Spectral TypeG5
Colour(G) White to Yellow

Companions (Multi-Star and Exoplanets) Facts

Exoplanet Count2

Estimated Facts

Radius (x the Sun)1.89
Calculated Effective Temperature5,399 Kelvin
Mass Compared to the Sun1.00
Metallicity0.17000

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
11964-10 403.0A6.50000-375.00000-228.00000G5Yellow
B10.50000

List of Extrasolar Planets orbiting HD 11964


NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastron
Hd 11964 BConfirmed0.6221945.0000.04120053.16155.000
Hd 11964 CConfirmed0.07937.9100.320050.229102.000

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