On 22 March your 1834 ZT DR position is LAT 26°13.5'... - USCG Navigation Problems

On 22 March your 1834 ZT DR position is LAT 26°13.5' S, LONG 108°36.5' W. You observe an unidentified star bearing 077°T, at an observed altitude (Ho) of 43°10.5'. The chronometer reads 01h 32m 37s and is 01m 50s slow. What star did you observe?

A Regulus

B Menkar

C Rigel

D Alphard

AI Explanation

The correct answer is D) Alphard. To determine the observed star, we can use the information provided and apply celestial navigation principles. Given the date, time, and position, we can use nautical almanacs or star charts to identify the star with the corresponding altitude and azimuth. Based on the provided information, the observed star with a bearing of 077°T and an altitude of 43°10.5' is Alphard. The other answer choices (Regulus, Menkar, and Rigel) do not match the observed celestial data at the given time and position.

Question 110Navigation Problems

On 22 March your 1834 ZT DR position is LAT 26°13.5' S, LONG 108°36.5' W. You observe an unidentified star bearing 077°T, at an observed altitude (Ho) of 43°10.5'. The chronometer reads 01h 32m 37s and is 01m 50s slow. What star did you observe?