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UY Canis Majoris

UY Canis Majoris Facts

Location of UY Canis Majoris

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 UY Canis Majoris, the location is 06 18 16.3755832779 and -17 02 34.675568987 .

Proper Motion of UY Canis Majoris

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 1.12 miliarcseconds/year towards the north and 0.25 miliarcseconds/year east if we saw them in the horizon. . 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) of UY Canis Majoris

UY Canis Majoris has a spectral type of G0V D~. This means the star is a white to yellow main sequence star.

Distance to UY Canis Majoris

The Parallax of the star is given as 0.07 which gives a calculated distance to UY Canis Majoris of 48177.75 light years from the Earth or 14771.05 parsecs. It would take a spaceship travelling at the speed of light, 48177.75 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 3,046,726,536.43 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.

Variable Type of UY Canis Majoris

The star is a pulsating RV Tauri 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.

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Additional UY Canis Majoris Facts and Figures

Visual Facts


Primary / Proper / Traditional NameUY Canis Majoris
Spectral TypeG0V D~
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type main sequence Dwarf Star
ColourWhite to Yellow
GalaxyMilky Way
ConstellationCanis Major
Right Ascension (R.A.)06 18 16.3755832779
Declination (Dec.)-17 02 34.675568987
Distance from Earth0.07 Parallax (milliarcseconds)
 48177.75 Light Years
 14771.05 Parsecs
 3,046,726,536.43 Astronomical Units
Proper Motion Dec.1.12 milliarcseconds/year
Proper Motion RA.0.25 milliarcseconds/year

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassPulsating
Variable Star TypeRV Tauri

Sources and Links


Sourcehttp://simbad.u-strasbg.fr/simbad/sim-id?Ident=uy%20canis%20majoris

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