Great work of art?

Last week we discussed in class the idea of what it takes to be a great work of art. A formula was presented by our professor explaining just that.

AE <=> SF

This formula means that aesthetic emotion is equal to significant form. They may be equal to each other, however, it never mentions what they are. Therefore, this formula tells you that you cannot tell what aesthetic emotion is but it is what you feel when in the presence of significant form. Also it cannot tell you what significant form is but it is what causes one to feel aesthetic emotion.

Therefore, a question i pose is, if something does not have significant form, do you not feel aesthetic emotion from it, or is that in some way possible?