Celestial Navigation · Coordinates — Declination and Latitude
A celestial body's geographical position (GP) has a latitude equal to the body's:
- ALocal hour angle
- BGreenwich hour angle
- CSidereal hour angle
- DDeclination✓ Correct
Explanation
The GP is the point on Earth directly beneath the body. Its latitude equals the body's declination, and its longitude is derived from the body's GHA. Sight reduction is essentially measuring your distance and direction from this point.
Authority: Bowditch (Pub. No. 9), Celestial Coordinates
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