V487 CASSIOPEIAE (HD-6474) - A UU HERCULIS VARIABLE IN THE GALACTIC PLANE

New photoelectric photometry of V487 Cassiopeiae (HD 6474) made betwee n 1984 and 1992 is presented. The star has a rather complicated light variation: at least two periods (P1=160.3d and P2=99.6d) are present i n the light curve, one of them possibly with variable amplitude. The p eriod ratio (P2/P1=0.62) and the nature of the light variation (i.e. t he simultaneous presence of two modes, the amplitude change) are both very similar to that of UU Herculis. This similarity indicates that V4 87 Cassiopeiae is a UU Her-type variable though it is in the galactic plane. A distinction between the UU Her-type and 89 Her-type variables is suggested.