An update from yesterday morning that I am only now writing about:
The FITS Binary table is complete! Or, if not "complete," at least up-to-date with all the data we've been working with. I successfully structured and stuffed, so now our data will be easier to manipulate. I think Mimi's already working with it to compute each satellite's distance to it's "home" galaxy.
So, Hooray! Successfully completed. And it was fun, too, surprisingly. I suppose part of this learning process is also learning how to enjoy the day-to-day tasks that I know will ultimately help the big-picture project.