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 ?
By late January, the Polar Star will loom over the western Antarctic on its key annual mission -- breaking through ice for the yearly resupply of researchers at the U.
This past summer, the 38-year old Polar Star went back to sea in a momentous way when she conducted ice trials in the Arctic region to test and evaluate many of the new systems installed during the reactivation effort.
The Australian Maritime Safety Authority's Rescue Co-ordination Centre, which oversaw the rescue, said the Polar Star, the US Coast Guard's only active heavy polar icebreaker, would leave Sydney today after taking on supplies.
2 billion to reconstruct the Polar Sea or Polar Star from scratch to the current standard for heavy icebreakers.
The new polar icebreaker for which initial acquisition funding is requested in the FY2013 budget would replace Polar Star at about the time Polar Star's 7- to 10-year reactivation period ends.
One can see that star and Sun periods appear equally both at West and East directions of a beam, and disappear completely when a beam is directed towards the Polar Star.
22 June 2011 - ICRA assigned yesterday a long-term rating of LBB- to the fund-based limits of Indian diamonds exporter Polar Star, while reaffirming the short-term rating at A4.
Polar Star Mining Corporation (TSX:PSR), an emerging exploration company with a focus on building value in Chile, has granted stock options to certain directors, officers and employees of the company.
Available as Black Night, Mars Magic (hot red), Polar Star (white and yellow) and Sunshine (yellow).
Mr Clarkson was also Consul for Sweden on Teesside from 1981 to 1992 and was awarded the Royal Order of the Polar star for his services.
The ships MV Polar Star, Tala, Golden Falcon, Zenobia and Royal Pearl would be reaching in the first ten days of July 2010.
The polar star should be what is best for the Indian hockey team.