#5 - is definately not Robinson, that's the capital of the Draconis March. I think it's Luthien.
#4 - is the Orion. Both Nicholas and Alexandsar piloted Orions (See the Orion IIC's entry in the 3060 tech readout), it might have even been the same one.
#3 - Arc Royal Mechworks is one of them. I know the second one is on Arc Royal as well and I think it WC Site 1, although I am not 100% sure.
#2 - I believe it's the Taurian Concordat. Not definate on that one either.
#1 - Just a guess, but I'd say it on Turkyayd (I know the spelling is wrong.)