Nomad Lair system?
However, in the SP story, the Battleship Osiris takes you to an unnamed system to invade the Nomad Lair and get the power supply. A jump hole from that system leads to Omicron Minor, where Planet Toledo (the Order base) is located. From Omicron Minor you take a Nomad jump gate to the system with the Dyson sphere, the Nomad home world. This connection isn't shown on the Datastorm maps.
Where does the name Omicron Major come from? Is it the system that contains the Nomad Lair, or the Dyson sphere, or both? Or is the Lair in Omicron Beta? How do these two or three systems relate to the rest of Sirius? Could be there is no authoritative way to sort out this geographical dilemma. If there is one, I'm interested to learn the answer.