Thanks! (real kudos most definitely goes to no_slogan without saying though).

At first, before I got to really play with the code (and I fully admit that the math is so far beyond my comprehension that I can't even describe), I threw the name Magnetic::Declination quickly into the mix with the time I had so I could create a home to build from.

Honestly, it doesn't really fit imho, as it defeats the top level naming structure of the CPAN for not joining into existing which morgon said, along with his statement that "Declination" doesn't fit either because the distribution will provide two functions (inclination as well as declination).

I have not really specifically looked through the CPAN for where it could go. That's why I threw this question here. I'll re-visit this tomorrow, and before I review any further responses, I'll parse the CPAN namespace for top-level names, and we'll all go from there.