Originally Posted by felgall
I did a quick search for how many moons Jupiter has and most of the sites that came up on the first page of the results said that it has 63+ moons. Only one of them gave 49 as the "official" number and even that one said that there were at least 14 more waiting to be given names.
Yep, I saw numbers all over the place. But the debate seems to be how big and/or how regular an orbit a satellite has to be to called a "moon". I'm sure there are more than 49 official ones by now, since that figure was true 4 years ago, but I couldn't find anything more recent with an "official" number.