On 22 July your 0442 DR position is LAT 26°35.6' N, LONG 22°16.7' W. You observe an unidentified star bearing 091°T at an observed altitude (Ho) of 64°35.2'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?

Question

On 22 July your 0442 DR position is LAT 26&deg;35.6' N, LONG 22&deg;16.7' W. You observe an unidentified star bearing 091&deg;T at an observed altitude (Ho) of 64&deg;35.2'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?

Accepted Answer

Option A: Hamal. Determine GMT from the chronometer reading. Calculate GHA Aries and the star's SHA to find the LHA. Using the DR position, calculate the intercept and azimuth. Matching the observed bearing of 091°T and the altitude of 64°35.2' against the Nautical Almanac star list confirms the observed body is Hamal.

On 22 July your 0442 DR position is LAT 26&deg;35.6' N, LONG 22&deg;16.7' W. You observe an unidentified star bearing 091&deg;T at an observed altitude (Ho) of 64&deg;35.2'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?

On 22 July your 0442 DR position is LAT 26°35.6' N, LONG 22°16.7' W. You observe an unidentified star bearing 091°T at an observed altitude (Ho) of 64°35.2'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?