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NTS 3

active
Positioning Navigation TimingGEOCOSPAR 2025-173ALaunched 8/13/2025
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Mission & Launch
Launch Mission
USSF-106
Launch Vehicle
Vulcan Centaur VC4S
Launch Date
8/13/2025
Orbit & Mass
Orbit Class
GEO
Altitude
35,439.5 km
Inclination
3.24 deg
Dry Mass
1,250 kg
Total Mass
1,250 kg
Payload Classification
Mission Type
Positioning Navigation Timing
Payload Category
NAV
Payload Class
D
Organizations
Operator
U.S. Space Force
Manufacturer
Northrop Grumman
Registry
COSPAR ID
2025-173A
Track
Mentions
86
All verified mentions of this spacecraft in source documents.
0.0-5.0
Actions

NTS-3 will carry a fully reprogrammable, 100 percent digital payload using a direct-to-L-band direct digital synthesis approach.

CapabilityValue 4.0Mar 16, 2019Air Force experiment NTS-3 could point the way to the next generation of GPS

AFRL’s Space Vehicles Directorate awarded an $80,400,000 contract for NTS-3 to Harris Corporation in December.

Relationships
Page5of5
Financial
Value 4.8
Mar 16, 2019
Air Force experiment NTS-3 could point the way to the next generation of GPS

NTS-3 is intended to demonstrate how an additional geostationary layer of PNT satellites could augment the medium Earth orbit GPS constellation.

PlanGeneralValue 3.5Mar 16, 2019Air Force experiment NTS-3 could point the way to the next generation of GPS

The ESPAStar bus being built for NTS-3 has a four-panel deployable solar array instead of the three-panel array used for EAGLE.

CapabilityValue 4.0Mar 16, 2019Air Force experiment NTS-3 could point the way to the next generation of GPS

AFRL awarded Braxton Technologies a Small Business Innovation Research contract in 2017 to develop the ground system for NTS-3.

RelationshipsPlanCapabilityValue 4.0Mar 16, 2019Air Force experiment NTS-3 could point the way to the next generation of GPS

Harris Corporation, based in Melbourne, Florida, is the prime contractor to build NTS-3 using a Northrop Grumman ESPAStar bus.

RelationshipsCapabilityValue 4.8Mar 16, 2019Air Force experiment NTS-3 could point the way to the next generation of GPS