On 15 October your 0300 zone time DR position is LAT 27°14' S, LONG 99°46' E. You are on course 128°T at a speed of 19 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?

Correct Answer: Option D — Achernar, Procyon, Aldebaran

Optimal star fixes require bodies separated by approximately 120 degrees in azimuth to minimize geometric dilution of precision. Achernar, Procyon, and Aldebaran provide excellent azimuthal spread and sufficient magnitude for clear identification during morning or evening twilight at the specified latitude and longitude.