On 22 June your 0424 DR position is LAT 26°18.5'N, LONG 124°18.2'W. You observe an unidentified star bearing 195°T at an observed altitude (Ho) of 03°30.7'. The chronometer reads 00h 23m 24s, and is 01m 32s slow. What star did you observe?

Question

On 22 June your 0424 DR position is LAT 26&deg;18.5'N, LONG 124&deg;18.2'W. You observe an unidentified star bearing 195&deg;T at an observed altitude (Ho) of 03&deg;30.7'. The chronometer reads 00h 23m 24s, and is 01m 32s slow. What star did you observe?

Accepted Answer

Option B: Peacock. Determine GMT by applying chronometer error to the reading. Extract GHA Aries and SHA from the Nautical Almanac to find the star's LHA. Using the DR position, calculate the computed altitude and azimuth. The resulting coordinates align with Peacock, consistent with the observed altitude and bearing.

On 22 June your 0424 DR position is LAT 26&deg;18.5'N, LONG 124&deg;18.2'W. You observe an unidentified star bearing 195&deg;T at an observed altitude (Ho) of 03&deg;30.7'. The chronometer reads 00h 23m 24s, and is 01m 32s slow. What star did you observe?

On 22 June your 0424 DR position is LAT 26°18.5'N, LONG 124°18.2'W. You observe an unidentified star bearing 195°T at an observed altitude (Ho) of 03°30.7'. The chronometer reads 00h 23m 24s, and is 01m 32s slow. What star did you observe?