On 22 May your 0437 ZT DR position is LAT 25°18.5' N, LONG 51°18.0' W. You observe an unidentified star bearing 097°T at an observed altitude (Ho) of 48°20.0'. The chronometer reads 07h 40m 40s and is 03m 24s fast. What star did you observe?

Question

On 22 May your 0437 ZT DR position is LAT 25&deg;18.5' N, LONG 51&deg;18.0' W. You observe an unidentified star bearing 097&deg;T at an observed altitude (Ho) of 48&deg;20.0'. The chronometer reads 07h 40m 40s and is 03m 24s fast. What star did you observe?

Accepted Answer

Option D: Markab. Convert chronometer time to GMT, then determine GHA Aries and the SHA of the body. Calculate the LHA and compare the resulting intercept and azimuth against the Nautical Almanac. The observed bearing of 097°T and altitude of 48°20.0' align with the calculated values for the star Markab.

On 22 May your 0437 ZT DR position is LAT 25&deg;18.5' N, LONG 51&deg;18.0' W. You observe an unidentified star bearing 097&deg;T at an observed altitude (Ho) of 48&deg;20.0'. The chronometer reads 07h 40m 40s and is 03m 24s fast. What star did you observe?

On 22 May your 0437 ZT DR position is LAT 25°18.5' N, LONG 51°18.0' W. You observe an unidentified star bearing 097°T at an observed altitude (Ho) of 48°20.0'. The chronometer reads 07h 40m 40s and is 03m 24s fast. What star did you observe?