Celestial Navigation · Meridian Altitude — Contrary Name
At LAN the sun's Ho is 80°00', it bears due south, declination S5°00'. What is your latitude?
- AN15°00'
- BN05°00'✓ Correct
- CS05°00'
- DN10°00'
Explanation
ZD = 90° − 80° = 10°, toward the north. Latitude = ZD + dec (signs N+, S−) = +10° + (−5°) = +5° = N05°. (Check: at N5° a body with dec S5° culminates at 90° − (5° + 5°) = 80°.)
Authority: Bowditch (Pub. No. 9), Latitude by Meridian Altitude
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