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Constellations
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PWSA future tranches and replenishment

Used for PWSA future replenishment projections that are analytically justified but not yet announced as public contracts, RFIs, or solicitations.

U.S. Space Development Agency (SDA)Service start: Not stated
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Linked spacecraft
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Active linked
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Derived from linked spacecraft status.
Future linked
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Planned target

Forecasted Satellites

4 forecast rows linked to this constellation.

288 satellites2031-2037Forecast table
Forecast entryYearSatellitesOrbitVehicleManufacturerMissionLaunch likelihood
PWSA Tracking Layer Tranche 4 replenishment - anticipated

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SpacecraftStatusOrbitLaunch date

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Not stated
No active-share calculation available.
First unannounced Tracking Layer replenishment cycle after T3. Count uses the latest source-backed T3 Tracking tranche size of 72 spacecraft as a conservative placeholder until SDA releases a T4 RFI/solicitation/award.
2031
72
LEO
TBD
TBD
Missile Warning Tracking
3.35 / 5
PWSA Tracking Layer Tranche 5 replenishment - anticipated
Second unannounced Tracking Layer replenishment cycle. Count repeats the T3 72-spacecraft tranche size because GAO reports a two-year replenishment cadence but no public T5 count is available.
203372LEOTBDTBDMissile Warning Tracking3.35 / 5
PWSA Tracking Layer Tranche 6 replenishment - anticipated
Third unannounced Tracking Layer replenishment cycle. Farther horizon lowers confidence; quantity remains a placeholder based on the current 72-spacecraft T3 Tracking Layer scale.
203572LEOTBDTBDMissile Warning Tracking3.35 / 5
PWSA Tracking Layer Tranche 7 replenishment - anticipated
Fourth unannounced Tracking Layer replenishment cycle inside the forecast horizon. This is a lifecycle projection, not a contract-backed forecast, and should be replaced when official tranche planning appears.
203772LEOTBDTBDMissile Warning Tracking3.35 / 5
PWSA Tracking Layer Tranche 4 replenishment - anticipated
TBD · LEO
72
2031
Manufacturer
TBD
Mission
Missile Warning Tracking
Launch likelihood
3.35 / 5
PWSA Tracking Layer Tranche 5 replenishment - anticipated
TBD · LEO
72
2033
Manufacturer
TBD
Mission
Missile Warning Tracking
Launch likelihood
3.35 / 5
PWSA Tracking Layer Tranche 6 replenishment - anticipated
TBD · LEO
72
2035
Manufacturer
TBD
Mission
Missile Warning Tracking
Launch likelihood
3.35 / 5
PWSA Tracking Layer Tranche 7 replenishment - anticipated
TBD · LEO
72
2037
Manufacturer
TBD
Mission
Missile Warning Tracking
Launch likelihood
3.35 / 5
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