On 24 July your 1912 zone time DR position is LAT 24°28.0' N, LONG 73°46.5' W. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?
Official USCG Answer & Rule Citation
Correct Answer: Option B — Spica, Altair, Alioth
Effective celestial fixes require stars with a wide azimuth spread and altitudes between 15° and 70°. Spica, Altair, and Alioth provide the optimal geometric configuration for the specified date and latitude, ensuring the lines of position intersect at angles near 90° to maximize accuracy and minimize potential errors.
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