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AD Boötis

AD Boötis Facts

Location of AD 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 AD Boötis, the location is 14 35 12.7792852189 and +24 38 21.341555627 .

Proper Motion of AD 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 -6.06 miliarcseconds/year towards the north and -22.63 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 AD Boötis

AD Boötis has a spectral type of G0 D. This means the star is a white to yellow star.

Distance to AD Boötis

The Parallax of the star is given as 5.12 which gives a calculated distance to AD Boötis of 637.31 light years from the Earth or 195.40 parsecs. It would take a spaceship travelling at the speed of light, 637.31 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 40,303,862.30 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 AD Boötis

The star is a eclipsing binary sys Beta Lyrae (Sheliak) 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 AD Boötis Facts and Figures

Visual Facts


Primary / Proper / Traditional NameAD Bootis
Spectral TypeG0 D
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
ColourWhite to Yellow
GalaxyMilky Way
ConstellationBootes
Right Ascension (R.A.)14 35 12.7792852189
Declination (Dec.)+24 38 21.341555627
Distance from Earth5.12 Parallax (milliarcseconds)
 637.31 Light Years
 195.40 Parsecs
 40,303,862.30 Astronomical Units
Proper Motion Dec.-6.06 milliarcseconds/year
Proper Motion RA.-22.63 milliarcseconds/year

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Variable Star ClassEclipsing binary sys
Variable Star TypeBeta Lyrae (Sheliak)

Sources and Links


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

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