- The Autobot Orbital Command Hub is an Autobot-manned spacestation in the Generation One continuity family.
It is on the Hub that Autobots unassigned to warfront planets are stationed, waiting on-hand in the event that they'll be needed. From these Autobots a crew can be assembled quickly to man one of the Arks.
IDW comics continuity
A priority pulsewave from Earth reached Optimus Prime on the Hub just moments before a message buoy was received from the Calabi-Yau. He gathered Autobots from the Hub to crew the Ark-27 and left for Cybertron.
With Prime on Earth, Silverbolt became Operational Commander. A salvaged Blaster, having been presumed dead, arrived at the Hub and carried out a galaxy-wide broadcast to Autobot forces in order to draw out his attempted assassin.