This kind of consciousness is relative to an object. Shouldn't Consciousness be more about what separates the self and something else?
So, what author talks about should be probably named "instantaneous understanding of an object in consciousness", not "Consciousness".
Also, I disagree about limiting things with the first premise:
> Everything/object has a description, that is, everything has a definite state (no matter what it is).
"Objects" are not permanent. A definite state is hardly possible, except maybe for sub-atomic particles that are be indivisible (according to our current models). And even then, you should describe how they exist with relation to processes and interactions with other particles.
Consciousness of an "object" is thus, I think, not something that has to do with its definite state. Unless you speak of "consciousness of an object through an instantaneous snapshot".