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EI Cancri B

Primary Facts on EI Cancri B

EI Cancri B's Alternative Names

The Gliese ID of the star is GJ 1116 B. The star was added to the Gliese catalogue in 1970 by Richard van der Riet Woolley hence the GJ prefix rather than GL prefix.Star Names.

EI Cancri B has alternative name(s) :- EI Cnc B.

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

Location of EI Cancri B

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 EI Cancri B, the location is 08h 58m 15.128 and +19° 45` 47.03 .

Radial Velocity and Proper Motion of EI Cancri B

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 -54.00 miliarcseconds/year towards the north and -862.00 miliarcseconds/year east if we saw them in the horizon.

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is 13.00 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) of EI Cancri B

EI Cancri B has a spectral type of M7V. This means the star is a red main sequence star.

Distance to EI Cancri B

The Parallax of the star is given as 190.00 which gives a calculated distance to EI Cancri B of 17.17 light years from the Earth or 5.26 parsecs. It would take a spaceship travelling at the speed of light, 17.17 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 1,084,945.32 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 EI Cancri B Facts and Figures

Visual Facts


Primary / Proper / Traditional NameEI Cancri B
Alternative NamesEI Cnc B, Gliese 1116 B
Spectral TypeM7V
Constellation's Main StarNo
Multiple Star SystemYes
Star Type main sequence Dwarf Star
Colour red
GalaxyMilky Way
ConstellationCancer
Right Ascension (R.A.)08h 58m 15.128
Declination (Dec.)+19° 45` 47.03
Distance from Earth190.00 Parallax (milliarcseconds)
 17.17 Light Years
 5.26 Parsecs
 1,084,945.32 Astronomical Units
Proper Motion Dec.-54.00 milliarcseconds/year
Proper Motion RA.-862.00 milliarcseconds/year
Radial Velocity13.00 km/s
Associated / Clustered StarsEI Cancri
EI Cancri A

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Related Stars


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