  Tidal indicators are commonly associated with the electric and magnetic parts
of the Riemann tensor (and its covariant derivatives) with respect to a given
family of observers in a given spacetime. Recently, observer-dependent tidal
effects have been extensively investigated with respect to a variety of special
observers in the equatorial plane of the Kerr spacetime. This analysis is
extended here by considering a more general background solution to include the
case of matter which is also endowed with an arbitrary mass quadrupole moment.
Relation with curvature invariants and Bel-Robinson tensor, i.e.,
observer-dependent super-energy density and super-Poynting vector, are
investigated too.
