The Collaborative International Dictionary of English v.0.48:

nonsubjective \nonsubjective\ adj.
   undistorted by emotion or personal bias; based on observable
   phenomena; objective. Opposite of subjective. [Narrower
   terms: clinical, detached, unemotional; impersonal,
   neutral; {verifiable ]

   Syn: objective.
        [WordNet 1.5] nonsubmergible