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?

Correct Answer: Option C — Adhara

Convert chronometer time to GMT, extract GHA Aries and SHA of candidate navigational stars from the Nautical Almanac. Compute LHA and intercept values using celestial navigation sight reduction procedures outlined in Bowditch to identify Adhara.