On 28 October morning twilight will occur around 0524... - USCG Navigation Problems

On 28 October morning twilight will occur around 0524 ZT. Your DR position is LAT 25°25.0' N, LONG 32°33.3' W. Considering their magnitude and location, which group will be the three stars best suited to observe for a star fix at star time?

A Sirius, Hamal, Denebola

B Sirius, Mirfak, Hamal

C Sirius, Capella, Denebola

D Sirius, Denebola, Dubhe

AI Explanation

The correct answer is C) Sirius, Capella, Denebola. This is the correct answer because these three stars are best suited for a star fix at the given time and location. Sirius is a very bright star that will be visible in the southern part of the sky. Capella is a bright star in the northern part of the sky, and Denebola is a moderately bright star in the eastern part of the sky. Together, these three stars provide a good geometric spread to obtain an accurate star fix. The other options are incorrect because they do not provide as favorable a geometric spread for the star fix. Hamal and Dubhe are not as well-positioned as Capella and Denebola, and Mirfak is not as bright as Capella.

Question 95Navigation Problems

On 28 October morning twilight will occur around 0524 ZT. Your DR position is LAT 25°25.0' N, LONG 32°33.3' W. Considering their magnitude and location, which group will be the three stars best suited to observe for a star fix at star time?