WASHINGTON — The Pentagon hasn’t released its official cost estimate to stand up a brand-new space service, but a top defense budget analyst has crunched the numbers and believes it may cost $550 million more per year for a Space Force — at most.

In order to add the headquarters staffing needed to run a Space Force, the Defense Department would need anywhere from an additional $300 million to $550 million per year on top of the money it already budgets for space personnel, operations and procurement, according to a new report by Todd Harrison of the Center for Strategic and International Studies.

All told, that amounts to a boost of $1.5 billion to a total of $2.7 billion over a five-year period.