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V933 Centauri

V933 Centauri Facts

V933 Centauri's Alternative Names

HIP61362 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD109367.

V933 Centauri has alternative name(s) :- , V933 Cen.

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

Location of V933 Centauri

The location of the main sequence 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 object is compared to the celestial equator and is expressed in degrees. For V933 Centauri, the location is 12h 34m 26.04 and -45° 23` 45.6 .

Radial Velocity and Proper Motion of V933 Centauri

Proper Motion

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 2.05 ± 0.42 milliarcseconds/year towards the north and -6.88 ± 0.91 milliarcseconds/year east if we saw them in the horizon.

Radial Velocity

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is -3.66 km/s with an error of about 0.67 km/s . When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.

Physical Properties (Colour, Temperature) of V933 Centauri

V933 Centauri Colour and Temperature

V933 Centauri has a spectral type of M2/M3V. This means the star is a red main sequence 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 4,059 Kelvin.

V933 Centauri Radius

Radius has been calculated as being 1,208.24 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 840,694,836.29.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 63.69. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

V933 Centauri Apparent and Absolute Magnitudes

V933 Centauri has an apparent magnitude of 8.58 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 -9.03 If you used the 2007 Parallax value, you would get an absolute magnitude of -2.64. 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 V933 Centauri

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.03 which gave the calculated distance to V933 Centauri as 108721.11 light years away from Earth or 33333.33 parsecs. It would take a spaceship travelling at the speed of light, 108721.11 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 0.57 which put V933 Centauri at a distance of 5722.16 light years or 1754.39 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.

Using the 2007 distance, the star is roughly 361,866,391.91 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun. V933 Centauri brightness ranges from a magnitude of 8.706 to a magnitude of 8.611 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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Additional V933 Centauri Facts and Figures

Visual Facts

Primary / Proper / Traditional NameV933 Centauri
Alternative NamesHD 109367, HIP 61362, V933 Cen
Spectral TypeM2/M3V
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type Main Sequence Dwarf Star
GalaxyMilky Way
Absolute Magnitude -9.03 / -2.64
Visual / Apparent Magnitude8.58
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)12h 34m 26.04
Declination (Dec.)-45° 23` 45.6
Galactic Latitude17.37 degrees
Galactic Longitude299.81 degrees
1997 Distance from Earth0.03 Parallax (milliarcseconds)
 108721.11 Light Years
 33333.33 Parsecs
2007 Distance from Earth0.57 Parallax (milliarcseconds)
 5722.16 Light Years
 1754.39 Parsecs
 361,866,391.91 Astronomical Units
Proper Motion Dec.2.05 ± 0.42 milliarcseconds/year
Proper Motion RA.-6.88 ± 0.91 milliarcseconds/year
B-V Index1.46
Radial Velocity-3.66 ± 0.67 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Mean Variability Period in Days0.077
Variable Magnitude Range (Brighter - Dimmer)8.611 - 8.706

Estimated Calculated Facts

Radius (x the Sun)63.69
Effective Temperature4,059 Kelvin

Sources and Links

SIMBAD SourceLink

Related Stars

Comments and Questions

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