From: "Andrew Williams" awilliams@daikin.com.au Subject: [B7L] Re: planets
Someone once told me 'Prime' would have to indicate the first planet, which is
why GP could have never been named Darlon IV. However, if 'Prime' indicates the biggest planet in the system, then it could easily be fourth from the sun in the Darlon system. ie GP = Darlon IV in the same way Earth = Sol III.<
I always assume that a "Prime" designation indicates the most important planet in the system.
So for example, Earth would be "Sol Prime" as well as "Sol III". Jupiter would just be "Sol V".
My reasoning for this is that we never hear much about other planets in these systems with a "Prime" planet. No-one refers to Jupiter at all in the series. Earth is the primary planet mentioned (Mars, I think gets a single mention). We also get Gauda Prime, but we never get mention of any other planets in the system.
In other sci-fi series, we get Centauri Prime, the homeworld of the Centauri Republic in Babylon 5.
Wildean