Wolf – I believe the NBH”T idea is the ramban on kedoshim tihyu, and my understanding is that he’s referring to what otherwise would be birshus hatorah. Either way, if the idea is applied torah, it is halacha, which would be included in my definition of morality.
GAW – much of pirkei avos is halacha. And the almighty would be my definition and definer of objective morality.
The gemara in many places cites “lo bashamayim he” to refer to our capabilities of defining the torah generally and particularly halacha (which is the torah applied to the real world). This means that whatever our great authorities interpret the halacha to be is the application of the word of god from sinai, and is the epitome of what I would call morality.
I’m not saying that there can be no other sources to learn morality from (like nature etc.), but the torah is the beginning of the conversation and the only absolute authority on the subject. So believes orthodox judaism. In the opinion of this orthodox jew.