SJ-21 and SJ-25: Rendezvous and Proximity Ops Timeline (June–July 2025) After a brief encounter in mid-June, a second campaign began later that month. On 2 July, both satellites became optically indistinguishable, suggesting docking or sustained close proximity. As of 18 July, there’s still no optical confirmation of separation. Orbital behavior remains consistent with a docked or rigidly co-orbiting pair.