The SVMS-01OP Union Flag Orbit Package, also known as "Orbit Flag", is a SVMS-01 Union Flag reconfigured with space-use option parts. Notably, the flight units of the regular Union Flag are replaced with space-use thrusters. Although more advanced than the aging VMS-15OP Union Realdo Orbit Package, the Orbit Flag failed to replace the older machine for a number of reasons, including the introduction of GN Drive Tau-powered mobile suits.

While there are fewer Orbit Flags than the Union Realdo Orbit Packages, the anti-Federation organization, Katharon, acquired several units when mobile suit pilots dissatisfied with the Earth Sphere Federation's actions defected with various old mobile suits. Katharon's Orbit Flags were painted in the organization's custom color to differentiate them from Union/Earth Sphere Federation Forces's units, but their basic performances remain unchanged.