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V532 Carinae, HD97451, HIP54708

V532 Carinae is a red pulsating giant star that can be located in the constellation of Carina. The description is based on the spectral class. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.

V532 Carinae's Alternative Names

HIP54708 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD97451.

V532 Carinae has alternative name(s) :- , V532 Car.

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

Location of V532 Carinae

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 V532 Carinae, the location is 11h 12m 03.60 and -58° 25` 24.1 .

Proper Motion of V532 Carinae

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 -0.98 ± 0.33 miliarcseconds/year towards the north and -49.77 ± 0.42 miliarcseconds/year east if we saw them in the horizon.

V532 Carinae 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 440.80 that I have given is based on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012.

Physical Properties (Colour, Temperature) of V532 Carinae

V532 Carinae has a spectral type of M4III. This means the star is a red giant star. The star is 7,320.00 Parsecs from the Galactic Centre or terms of Light Years is 23,875.16 s. The star has a B-V Colour Index of 1.49 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,007 Kelvin.

V532 Carinae Radius has been calculated as being 24.73 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 17,208,949.04.km. If you need the diameter of the star, you just need to multiple the radius by 2. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 26.62. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

V532 Carinae Apparent and Absolute Magnitudes

V532 Carinae has an apparent magnitude of 6.24 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 -0.53 If you used the 2007 Parallax value, you would get an absolute magnitude of -0.69. 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 V532 Carinae

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 4.43 which gave the calculated distance to V532 Carinae as 736.26 light years away from Earth or 225.73 parsecs. It would take a spaceship travelling at the speed of light, 736.26 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 4.12 which put V532 Carinae at a distance of 791.66 light years or 242.72 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.

The star's Galacto-Centric Distance is 7,320.00 Parsecs or 23,875.16 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

Variable Type of V532 Carinae

The star is a pulsating Semi-Regular Star which are giants or supergiants of intermediate and late spectral variable type which means that its size changes over time. The Variable Type is usually named after the first star of that type to be spotted. V532 Carinae brightness ranges from a magnitude of 6.284 to a magnitude of 6.103 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 0.1 days (variability).

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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V532 Carinae Facts

Visual Facts


Primary / Proper / Traditional NameV532 Carinae
Alternative NamesHD 97451, HIP 54708, V532 Car
Spectral TypeM4III
Multiple Star SystemNo / Unknown
Star TypeGiant Star
Colour red
GalaxyMilky Way
ConstellationCarina
Absolute Magnitude-0.53 / -0.69
Visual / Apparent Magnitude6.24
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)11h 12m 03.60
Declination (Dec.)-58° 25` 24.1
Galactic Latitude1.97 degrees
Galactic Longitude290.21 degrees
1997 Distance from Earth4.43 Parallax (milliarcseconds)
 736.26 Light Years
 225.73 Parsecs
2007 Distance from Earth4.12 Parallax (milliarcseconds)
 791.66 Light Years
 242.72 Parsecs
Galacto-Centric Distance23,875.16 Light Years / 7,320.00 Parsecs
Proper Motion Dec.-0.98 ± 0.33 milliarcseconds/year
Proper Motion RA.-49.77 ± 0.42 milliarcseconds/year
B-V Index1.49
Stellar Luminosity (Lsun)440.80

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassPulsating
Variable Star TypeSemi-Regular Star which are giants or supergiants of intermediate and late spectral
Mean Variability Period in Days0.149
Variable Magnitude Range (Brighter - Dimmer)6.103 - 6.284

Estimated Facts


Calculated Effective Temperature4,007 Kelvin

Sources and Links


SIMBAD SourceLink

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