My mother and I were vacationing in Cuba at the time. A heavy storm was about to arrive and we went out onto the balcony to take some pictures of the ocean/sky. We did not notice this object at the time. Only after going through our photos did we notice a bright, orb-like object in one of the pictures. There was zero chance of this being an airplane (airspace is fairly restricted in Cuba and only a few flights come into Varadero airport each day). There was also no chance of this being a reflection from the sun as there the cloud cover was far too dense.