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DX Cancri (Flare Star) Facts

DX Cancri Facts

DX Cancri's Alternative Names

DX Cancri has alternative name(s) :- GJ 1111, Gliese 1111.

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

Location of DX Cancri

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 DX Cancri, the location is 08h 29m 49.345 and +26° 46` 33.74 .

Radial Velocity and Proper Motion of DX Cancri

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 -610.90 milliarcseconds/year towards the north and -1,112.20 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 9.00 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, Mass, Radius) of DX Cancri

DX Cancri Colour and Temperature

DX Cancri has a spectral type of M.5V. This means the star is a red main sequence star. The star has a B-V Colour Index of 2.08 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 541 Kelvin.

DX Cancri Radius

DX Cancri has been calculated as 0.11 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 76,538.00.km. If you need the diameter of the star, you just need to multiple the radius by 2. The star's solar mass is 0.09 times that of the Sun's. The Sun's Mass is 1,989,100,000,000,000,000,000 billion kg. which to calculate using this website is too large. To give idea of size, the Sun is 99.86% the mass of the solar system.

DX Cancri Apparent and Absolute Magnitudes

DX Cancri has an apparent magnitude of 14.81 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 17.01 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 DX Cancri

The Parallax of the star is given as 275.80 which gives a calculated distance to DX Cancri of 11.83 light years from the Earth or 3.63 parsecs. It would take a spaceship travelling at the speed of light, 11.83 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 748,736.03 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.

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Additional DX Cancri Facts and Figures

Visual Facts

Primary / Proper / Traditional NameDX Cancri
Alternative NamesGJ 1111, Gliese 1111
Spectral TypeM.5V
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type Main Sequence Dwarf Star
GalaxyMilky Way
Visual / Apparent Magnitude14.81
Naked Eye VisibleRequires 8m Telescope - Magnitudes
Right Ascension (R.A.)08h 29m 49.345
Declination (Dec.)+26° 46` 33.74
Distance from Earth275.80 Parallax (milliarcseconds)
 11.83 Light Years
 3.63 Parsecs
 748,736.03 Astronomical Units
Proper Motion Dec.-610.90 milliarcseconds/year
Proper Motion RA.-1112.20 milliarcseconds/year
B-V Index2.08
Radial Velocity9.00 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Estimated Calculated Facts

Radius (x the Sun)0.11
Mass Compared to the Sun0.09

Sources and Links


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Comments and Questions

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