Sigma Octantis

'Sigma Octantis' can also refer to...


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The south pole star, being the closest naked-eye star to the south celestial pole. It is an F0 giant of magnitude 5.4, lying 281 l.y. away. It is about 1° from the south celestial pole, and the distance is slowly increasing as a result of precession.

Subjects: Astronomy and Astrophysics.

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