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VX Geminorum (Carbon Star) Facts

VX Geminorum Facts

VX Geminorum's Alternative Names

HIP34859 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD55284.

VX Geminorum has alternative name(s) :- VX Gem, VX Gem.

BD number is the number that the star was filed under in the Durchmusterung or Bonner Durchmusterung, a star catalogue that was put together by the Bonn Observatory between 1859 to 1903. The star's BD Number is BD+14 1598.

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

Location of VX Geminorum

The location of the carbon 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 VX Geminorum, the location is 07h 12m 48.97 and +14° 36` 03.7 .

Physical Properties (Colour, Temperature) of VX Geminorum

VX Geminorum Colour and Temperature

VX Geminorum has a spectral type of C8e. This means the star is a carbon red carbon star. The star has a B-V Colour Index of 3 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 0 Kelvin.

VX Geminorum Apparent and Absolute Magnitudes

VX Geminorum has an apparent magnitude of 10.05 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 0.16 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 Geminorum

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 1.05 which gave the calculated distance to VX Geminorum as 3106.32 light years away from Earth or 952.38 parsecs. It would take a spaceship travelling at the speed of light, 3106.32 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

Variable Type of VX Geminorum

The star is a pulsating Omicron Ceti 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 Geminorum brightness ranges from a magnitude of 10.576 to a magnitude of 8.711 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 381.0 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 VX Geminorum Facts and Figures

Visual Facts

Primary / Proper / Traditional NameVX Geminorum
Alternative NamesVX Gem, HD 55284, HIP 34859, BD+14 1598, VX Gem
Spectral TypeC8e
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeCarbon Star
GalaxyMilky Way
Absolute Magnitude 0.16
Visual / Apparent Magnitude10.05
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)07h 12m 48.97
Declination (Dec.)+14° 36` 03.7
Galactic Latitude11.25 degrees
Galactic Longitude202.16 degrees
Distance from Earth1.05 Parallax (milliarcseconds)
 3106.32 Light Years
 952.38 Parsecs
 196,441,107.35 Astronomical Units
B-V Index3.00
Radial Velocity51.00 ± 3.70 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Variable Star ClassPulsating
Variable Star TypeOmicron Ceti
Mean Variability Period in Days381.000
Variable Magnitude Range (Brighter - Dimmer)8.711 - 10.576

Sources and Links

SIMBAD SourceLink

Related Stars

Comments and Questions

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