pole star


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Pole Star

the. the star closest to the N celestial pole at any particular time. At present this is Polaris, but it will eventually be replaced by some other star owing to precession of the earth's axis

pole star

The star closest to the north or south celestial pole at any particular time. As a result of precession the position of each pole traces out a circle in the sky in a period of about 25 800 years. There is thus a sequence of stars, including Polaris, Vega, and Thuban, that have been and will become again the northern pole star (see illustration). The nearest naked-eye star to the south celestial pole is at present the 5th magnitude star Sigma Octantis. The altitude of the pole star is approximately equal to the local latitude.

Pole Star

[′pōl ‚stär]
(astronomy)
References in periodicals archive ?
The angle of the Pole Star above the horizon is the same as your latitude (part of your position on the Earth).
Pole Star is a privately owned UK technology company that has been providing vessel monitoring, regulatory compliance & risk management services to the shipping industry since 1998.
Vismt-Purina 2,9,1) tell that God appears in the sky in the shape of a starry crocodile, with the Pole Star in its tail (cf.
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It arrives g that looks straight at the Pole Star through a long slot.
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Which constellation contains the northern pole star Polaris?
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Nearby is Ursa Minor, the stars of my mother who pointed out the pole star to me as a marker so I would never lose my way.
Visitors will also learn how to identify a number of stars and constellations including the Plough, Pole Star, Orion and Sirius.
TEXT NOT REPRODUCIBLE IN ASCII] Shiji, "Treatise on the Heavenly Offices": "The brightest star of the Pole Star asterism in the Central Palace is the constant abode of the Supreme One.