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AR Boötis

AR Boötis Facts

AR Bootis's Alternative Names

AR Bootis has alternative name(s) :- AR Boo.

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

Location of AR Boötis

The location of the 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 AR Boötis, the location is 13 48 10.3998102852 and +24 55 27.047557168 .

Proper Motion of AR 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 -14.85 milliarcseconds/year towards the north and 16.17 milliarcseconds/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 AR Boötis

AR Bootis Colour and Temperature

AR Boötis has a spectral type of G9+K1. This means the star is a white to yellow star.

Distance to AR Boötis

The Parallax of the star is given as 2.57 which gives a calculated distance to AR Boötis of 1267.15 light years from the Earth or 388.50 parsecs. It would take a spaceship travelling at the speed of light, 1267.15 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 80,133,318.85 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 AR Boötis

The star is a eclipsing binary sys W Ursae Majoris 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 AR Boötis Facts and Figures

Visual Facts


Primary / Proper / Traditional NameAR Bootis
Alternative NamesAR Boo
Spectral TypeG9+K1
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
ColourWhite to Yellow
GalaxyMilky Way
ConstellationBootes
Right Ascension (R.A.)13 48 10.3998102852
Declination (Dec.)+24 55 27.047557168
Distance from Earth2.57 Parallax (milliarcseconds)
 1267.15 Light Years
 388.50 Parsecs
 80,133,318.85 Astronomical Units
Proper Motion Dec.-14.85 milliarcseconds/year
Proper Motion RA.16.17 milliarcseconds/year

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassEclipsing binary sys
Variable Star TypeW Ursae Majoris

Sources and Links


Sourcehttp://simbad.u-strasbg.fr/simbad/sim-id?Ident=ar%20boo

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