General Navigation USCG Question #1634 (Set 51)

In which of the following does the arc of a great circle pass through a body and the celestial poles?

Official USCG Answer & Rule Citation

Correct Answer: Option B — hour circle

Defined in navigational astronomy, an hour circle is a great circle on the celestial sphere passing through the celestial poles and any celestial body, analogous to meridians of longitude on the terrestrial sphere.

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