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132 Tauri - HD38751 - HIP27468

132 Tauri is a white to yellow giant star that can be located in the constellation of Taurus. 132 Tauri is the brightest star in Taurus based on the Hipparcos 2007 apparent magnitude. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.

HIP27468 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD38751.

132 Tauri has alternative name(s), 132 Tauri , 132 Tau. 132 Tauri is a multiple star system with 2 stars orbiting in its solar system.

Location of 132 Tauri

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 132 Tauri, the location is 05h 49m 00.96 and +24d34`03.2 .

Proper Motion of 132 Tauri

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 -8.30 ± 1.22 miliarcseconds/year towards the north and 10.44 ± 1.98 miliarcseconds/year east if we saw them in the horizon.

Physical Properties (Colour, Temperature, Radius) of 132 Tauri

132 Tauri has a spectral type of G8IIIvar. This means the star is a white to yellow giant star. The star has a B-V Colour Index of 1.02 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,811 Kelvin.

132 Tauri Radius has been calculated as being 22.72 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 15,809,870.35.km. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 15.86. 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 0.08 with an error value of 9.99 Fe/H with the Sun has a value of 1 to put it into context.

132 Tauri Apparent and Absolute Magnitudes

132 Tauri has an apparent magnitude of 4.88 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 -1.14 If you used the 2007 Parallax value, you would get an absolute magnitude of -0.36. 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 132 Tauri

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 6.25 which gave the calculated distance to 132 Tauri as 521.86 light years away from Earth or 160 parsecs. It would take a spaceship travelling at the speed of light, 521.86 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 8.97 which put 132 Tauri at a distance of 363.62 light years or 111.48 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.

132 Tauri Facts

Alternative Names

Traditional/Proper Name132 Tauri
Short Name132 Tau
Alternative Name(s)132 Tauri
Hipparcos Library I.D.27468
Bonner DurchmusterungBDD+24 970
Henry Draper Designation38751

Visual Facts

Star Typegiant star
Absolute Magnitude-1.14 / -0.36
Visual / Apparent Magnitude4.88
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)05h 49m 00.96
Declination (Dec.)+24d34`03.2
Galactic Latitude-1.61 degrees
Galactic Longitude184.13 degrees
1997 Distance from Earth6.25 Parallax (milliarcseconds)
 521.86 Light Years
 160 Parsecs
2007 Revised Distance from Earth8.97 Parallax (milliarcseconds)
 363.62 Light Years
 111.48 Parsecs
Proper Motion Dec.-8.30 ± 1.22 milliarcseconds/year
Proper Motion RA.10.44 ± 1.98 milliarcseconds/year
B-V Index1.02
Radial Velocity15.80 ± 0.60 km/s
Iron Abundance0.08 ± 9.99 Fe/H
Spectral TypeG8IIIvar
Colour(G) White to Yellow
Stars in Solar System2

Estimated Facts

Calculated Effective Temperature4,811 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
38751+24 970.0A4.90000-4.00000-23.00000G8Yellow
B1979

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