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USSF-87 will launch two identical Geosynchronous Space Situational Awareness Program (GSSAP) satellites GSSAP-7 and GSSAP-8 directly to a near-geosynchronous orbit approximately 36,000 km above the equator. Data from the GSSAP will uniquely contribute to timely and accurate orbital predictions, further enabling space flight safety including satellite collision avoidance.
Launch heading 93° · E from USSF-87 PO.
Pre-launch TLEs from Dillon's Space Page. Estimated before flight — the real orbit is confirmed post-launch.
Limiting rule: No flight through cumulus cloud with top at or above the freezing level.
5000% cloud cover in layer above freezing (14486 ft) — approximated