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CN Boötis

CN Boötis Facts

CN Bootis's Alternative Names

The Id of the star in the Yale Bright Star Catalogue is HR5443. The Id of the star in the Henry Draper catalogue is HD124953.

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

Location of CN Boötis

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 CN Boötis, the location is 14h 16m 04.139 and +18 54 42.48 .

Radial Velocity and Proper Motion of CN Boötis

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 -30.65 miliarcseconds/year towards the north and 40.14 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 4.00 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 CN Boötis

CN Boötis has a spectral type of A8V C. This means the star is a blue main sequence star.

Distance to CN Boötis

The Parallax of the star is given as 21.51 which gives a calculated distance to CN Boötis of 151.64 light years from the Earth or 46.49 parsecs. It would take a spaceship travelling at the speed of light, 151.64 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 9,589,184.02 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 CN Boötis

The star is a pulsating Delta Scuti 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 CN Boötis Facts and Figures

Visual Facts


Primary / Proper / Traditional NameCN Bootis
Alternative NamesHD 124953, HR 5443
Spectral TypeA8V C
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type main sequence Dwarf Star
ColourBlue
Galaxy Milky Way
ConstellationBootes
Right Ascension (R.A.)14h 16m 04.139
Declination (Dec.)+18 54 42.48
Distance from Earth21.51 Parallax (milliarcseconds)
 151.64 Light Years
 46.49 Parsecs
 9,589,184.02 Astronomical Units
Proper Motion Dec.-30.65 milliarcseconds/year
Proper Motion RA.40.14 milliarcseconds/year
Radial Velocity4.00 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassPulsating
Variable Star TypeDelta Scuti

Related Stars


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