On 20 June your 1742 zone time DR position is LAT 24°55.0' S, LONG 8°19.6' E. Considering their magnitude, azimuth, and altitude, which three stars are best suited for a fix at star time?

Question

On 20 June your 1742 zone time DR position is LAT 24&deg;55.0' S, LONG 8&deg;19.6' E. Considering their magnitude, azimuth, and altitude, which three stars are best suited for a fix at star time?

Accepted Answer

Option D: Regulus, Canopus, Antares. Regulus, Canopus, and Antares provide the optimal azimuth spread for a fix in the Southern Hemisphere. Bowditch principles require selecting stars with altitudes between 15° and 75° to avoid excessive refraction. This specific trio offers the best geometric intersection for the given DR position, ensuring a reliable and accurate fix.

On 20 June your 1742 zone time DR position is LAT 24&deg;55.0' S, LONG 8&deg;19.6' E. Considering their magnitude, azimuth, and altitude, which three stars are best suited for a fix at star time?

On 20 June your 1742 zone time DR position is LAT 24°55.0' S, LONG 8°19.6' E. Considering their magnitude, azimuth, and altitude, which three stars are best suited for a fix at star time?