On 13 June your 0445 DR position is LAT 20°12.0' N, LONG 44°45.0' W. You observe an unidentified star bearing 168°T at an observed altitude (Ho) of 38°56.0'. The chronometer reads 07h 43m 20s, and is 01m 39s slow. Which star did you observe?

Question

On 13 June your 0445 DR position is LAT 20&deg;12.0' N, LONG 44&deg;45.0' W. You observe an unidentified star bearing 168&deg;T at an observed altitude (Ho) of 38&deg;56.0'. The chronometer reads 07h 43m 20s, and is 01m 39s slow. Which star did you observe?

Accepted Answer

Option C: Fomalhaut. Comparing calculated local sidereal hour angle and declination derived from chronometer time and observed altitude against star tables in the Nautical Almanac positively identifies Fomalhaut.

On 13 June your 0445 DR position is LAT 20&deg;12.0' N, LONG 44&deg;45.0' W. You observe an unidentified star bearing 168&deg;T at an observed altitude (Ho) of 38&deg;56.0'. The chronometer reads 07h 43m 20s, and is 01m 39s slow. Which star did you observe?

On 13 June your 0445 DR position is LAT 20°12.0' N, LONG 44°45.0' W. You observe an unidentified star bearing 168°T at an observed altitude (Ho) of 38°56.0'. The chronometer reads 07h 43m 20s, and is 01m 39s slow. Which star did you observe?