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GPS III satellite From Wikipedia, the free encyclopedia
USA-309, also known as GPS-III SV04, NAVSTAR 80 or Sacagawea, is a United States navigation satellite which forms part of the Global Positioning System. It was the fourth GPS Block III satellite to be launched.[1]
![]() Artist's rendering of GPS-III SV04 in orbit | |
Names | Navstar 80 GPS-III SV04 Sacagawea |
---|---|
Mission type | Navigation |
Operator | USSF |
COSPAR ID | 2020-078A |
SATCAT no. | 46826 |
Mission duration | 15 years (planned) |
Spacecraft properties | |
Spacecraft | GPS-III SV04 |
Spacecraft type | GPS Block III |
Manufacturer | Lockheed Martin |
Launch mass | 4331 kg |
Power | watts |
Start of mission | |
Launch date | 5 November 2020, 23:24 UTC |
Rocket | Falcon 9 B1062.1 |
Launch site | Cape Canaveral, SLC-40 |
Contractor | SpaceX |
Orbital parameters | |
Reference system | Geocentric orbit |
Regime | Medium Earth orbit (Semi-synchronous orbit) |
Perigee altitude | 20,181 km (12,540 mi) |
Apogee altitude | 20,196 km (12,549 mi) |
Inclination | 54.9° |
Period | 718.0 minutes |
SV04 is the fourth GPS Block III satellite to be launched. Launch was pushed back several times due to delays with the earlier satellites.[2]
The spacecraft is built on the Lockheed Martin A2100 satellite bus, and weighs in at 4,331 kg (9,548 lb).[3]
USA-309 was launched by SpaceX on 5th of November 2020 at 23:24 UTC atop Falcon 9 booster B1062.[4] The launch took place from SLC-40 of the Cape Canaveral Air Force Station, and placed USA-309 directly into semi-synchronous orbit. About eight minutes after launch, Falcon 9 B1062 successfully landed on the droneship Of Course I Still Love You.[1]
As of 2021, USA-309 was in a 54.9 degree inclination orbit with a perigee of 20,181 kilometers (12,540 mi) and an apogee of 20,198 km (12,550 mi).[5]
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