GINGA observations of the dipping X-ray binary XB 1916-053.

Ginga observations of the 50-min dipping X-ray source XB 1916-053, performed in May and September 1987, are reported. Primary dips were observed throughout both observations, accompanied by secondary dipping activity in the September data. A periodogram analysis of these data indicates an X-ray period of 3005.0 + or - 6.6 sec. It is shown that a second candidate period at 2984.6 + or - 6.8 sec, arises as a result of half-cycle aliasing between the data from the fourth day and that of the first two days.