On 22 February your 1857 DR position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star bearing 108°T at an observed altitude (Ho) of 67°53.9'. The chronometer reads 01h 00m 35s, and is 03m 25s fast. What star did you observe?

Question

On 22 February your 1857 DR position is LAT 23&deg;46.0'S, LONG 93&deg;16.5'E. You observe an unidentified star bearing 108&deg;T at an observed altitude (Ho) of 67&deg;53.9'. The chronometer reads 01h 00m 35s, and is 03m 25s fast. What star did you observe?

Accepted Answer

Option C: Adhara. Calculate GHA Aries and LHA Aries from the chronometer time. Determine the star's LHA using the DR longitude. By entering Pub. 229 with the DR latitude and calculated LHA, the observed altitude and bearing match the coordinates for Adhara, consistent with standard celestial navigation reduction procedures for unidentified stars.

On 22 February your 1857 DR position is LAT 23&deg;46.0'S, LONG 93&deg;16.5'E. You observe an unidentified star bearing 108&deg;T at an observed altitude (Ho) of 67&deg;53.9'. The chronometer reads 01h 00m 35s, and is 03m 25s fast. What star did you observe?

On 22 February your 1857 DR position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star bearing 108°T at an observed altitude (Ho) of 67°53.9'. The chronometer reads 01h 00m 35s, and is 03m 25s fast. What star did you observe?