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HIP 66437, HD118320

HIP 66437 is a blue giant star that can be located in the constellation of Centaurus. The description is based on the spectral class. The star can not be seen by the naked eye, you need a telescope to see it.

HIP 66437's Alternative Names

HIP66437 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD118320.

More details on star alternative names can be found at Star Names .

Location of HIP 66437

The location of the star in the night sky 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 HIP 66437, the location is 13h 37m 11.62 and -47° 00` 56.1 .

Physical Properties (Colour, Temperature) of HIP 66437

HIP 66437 has a spectral type of B5III. This means the star is a blue giant star. The star has a B-V Colour Index of -0.05 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 10,395 Kelvin.

HIP 66437 Radius has been calculated as being 202.93 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 141,198,328.92.km. If you need the diameter of the star, you just need to multiple the radius by 2. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

HIP 66437 Apparent and Absolute Magnitudes

HIP 66437 has an apparent magnitude of 7.75 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Using the supplied Parallax value, you would get an absolute magnitude of -9.24 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 HIP 66437

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.04 which gave the calculated distance to HIP 66437 as 81540.84 light years away from Earth or 25000 parsecs. It would take a spaceship travelling at the speed of light, 81540.84 years 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 Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

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HIP 66437 Facts

Visual Facts


Primary / Proper / Traditional NameHIP 66437
Alternative NamesHD 118320, HIP 66437
Spectral TypeB5III
Multiple Star SystemNo / Unknown
Star TypeGiant Star
Colour blue
GalaxyMilky Way
ConstellationCentaurus
Absolute Magnitude-9.24
Visual / Apparent Magnitude7.75
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)13h 37m 11.62
Declination (Dec.)-47° 00` 56.1
Galactic Latitude15.14 degrees
Galactic Longitude310.98 degrees
Distance from Earth0.04 Parallax (milliarcseconds)
 81540.84 Light Years
 25000 Parsecs
B-V Index-0.05

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature10,395 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


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