http://starwars.wikia.com/wiki/IM-S-653_Orbital_GarrisonI was reading my copy of Imperial Handbook and I came across this little gem.
It's produced by
http://starwars.wikia.com/wiki/Rothana_Heavy_Engineering (look at the products it produced
)
It is basically made by putting two Peacekeeper together
http://starwars.wikia.com/wiki/IM-455_modular_garrison.
According to my book, a Peacekeeper has 3 twin turbolaser turrets, 6 heavy laser cannon turrets, and 36 TIE among other things.
The Hexostar would have at least 6 twin turbolaser turrets, 12 heavy laser cannon, and 72 TIEs.
It is similar to the Hive of Empire of the Hand.
It is no Empress or Validusia, but it is something Imperials could deploy quickly and the heavy laser cannons with the complement of an ISD's TIE wing make it more suitable against factions like NR. It certainly can not stand up against real warships bigger than a Nebulon-B or two though.