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VX Pictoris, HD32832, HIP23491

VX Pictoris is a red pulsating giant star that can be located in the constellation of Pictor. The description is based on the spectral class. VX Pictoris is not part of the constellation but is within the borders of the constellation.

The star can not be seen by the naked eye, you need a telescope to see it.

VX Pictoris's Alternative Names

HIP23491 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD32832.

VX Pictoris has alternative name(s) :- , VX Pic.

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

Location of VX Pictoris

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 VX Pictoris, the location is 05h 03m 00.32 and -54° 05` 52.8 .

Physical Properties (Colour, Temperature) of VX Pictoris

VX Pictoris has a spectral type of M4III. This means the star is a red giant star. The star has a B-V Colour Index of 1.67 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 3,575 Kelvin.

VX Pictoris Radius has been calculated as being 51.57 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 35,879,942.68.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.

VX Pictoris Apparent and Absolute Magnitudes

VX Pictoris has an apparent magnitude of 8.80 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 -1.63 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 VX Pictoris

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.82 which gave the calculated distance to VX Pictoris as 3977.60 light years away from Earth or 1219.51 parsecs. It would take a spaceship travelling at the speed of light, 3977.60 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

Variable Type of VX Pictoris

The star is a pulsating Semi-Regular Star w 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. VX Pictoris brightness ranges from a magnitude of 8.934 to a magnitude of 8.713 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 0.2 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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VX Pictoris Facts

Visual Facts


Primary / Proper / Traditional NameVX Pictoris
Alternative NamesHD 32832, HIP 23491, VX Pic
Spectral TypeM4III
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeGiant Star
Colour red
GalaxyMilky Way
ConstellationPictor
Absolute Magnitude -1.63
Visual / Apparent Magnitude8.80
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)05h 03m 00.32
Declination (Dec.)-54° 05` 52.8
Galactic Latitude-37.38 degrees
Galactic Longitude261.87 degrees
Distance from Earth0.82 Parallax (milliarcseconds)
 3977.60 Light Years
 1219.51 Parsecs
 251,540,241.11 Astronomical Units
B-V Index1.67

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassPulsating
Variable Star TypeSemi-Regular Star w
Mean Variability Period in Days0.196
Variable Magnitude Range (Brighter - Dimmer)8.713 - 8.934

Estimated Facts


Calculated Effective Temperature3,575 Kelvin

Sources and Links


SIMBAD SourceLink

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