Full Idea
An emotion normally has an intentional object, while a mood is objectless.
Gist of Idea
Emotions have intentional objects, while a mood is objectless
Source
Lars Svendsen (A Philosophy of Boredom [2005], Ch.3)
Book Reference
Svendsen,Lars: 'A Philosophy of Boredom' [Reaktion Books 2005], p.110
A Reaction
It doesn't follow that the object of the emotion is clearly understood, or even that it is conscious. One may experience rising anger while struggling to see what its object is. Artistic symbolism seems to involve objects that create moods.