Celestial Navigation · Sight Reduction — Same/Contrary Name
In the sight-reduction tables, 'latitude same name as declination' means:
- AThe body is on the observer's meridian
- BThe latitude and declination are numerically equal
- CThe latitude and declination are both north, or both south✓ Correct
- DThe LHA equals 0°
Explanation
'Same name' means latitude and declination share the same hemisphere (both N or both S); 'contrary name' means one is north and the other south. The table entry and the sign rules for the altitude difference depend on this distinction.
Authority: Pub. No. 229 / 249; Bowditch (Pub. No. 9)
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