galactic poles


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Related to galactic poles: galactic equator, galactic system

galactic poles

The two points on the celestial sphere that are 90° north and 90° south of every point on the galactic equator. The north galactic pole lies in the constellation Coma Berenices at RA 12h 51.4m, dec +27°7′.7 (2000.0). The south galactic pole, diametrically opposite, lies in Sculptor.
References in periodicals archive ?
The south galactic pole is situated within the galaxy-laden constellation of Sculptor, which is home to one of the more oddly placed open clusters in the sky: Blanco 1.
Blanco 1 lies just 800 light-years away and a mere 10[degrees] from the south galactic pole.
Having one large cluster situated near a galactic pole is curious; two is a very odd coincidence.
He speculated that some force, perhaps centrifugal, caused matter to aggregate near the galactic poles, forming irresolvable nebulae but few stars.
But unlike the celestial poles (unmistakably marked by the Earth's axis extended outward to the heavens) and the ecliptic poles (perpendicular to the Earth's orbital plane), the galactic poles are not known very precisely.
Since the directions to the galactic poles are perpendicular to the galactic equator - an imprecise reference point - the poles themselves are inaccurate.