USA-545
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.jpg) Launch of GPS-III 08 | |
| Names | Navstar 84 GPS-III SV08 Katherine Johnson |
|---|---|
| Mission type | Navigation |
| Operator | USSF |
| COSPAR ID | 2025-116A  |
| SATCAT no. | 64202 |
| Spacecraft properties | |
| Spacecraft | GPS-III SV08 |
| Spacecraft type | GPS Block III |
| Bus | A2100M |
| Manufacturer | Lockheed Martin |
| Start of mission | |
| Launch date | 30 May 2025 17:37 |
| Rocket | Falcon 9 Block 5 (F9-482) |
| Launch site | Cape Canaveral, SLC-40 |
| Contractor | SpaceX |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Medium Earth orbit (Semi-synchronous orbit) |
USA-545, also known as GPS-III SV08, NAVSTAR 84, and Katherine Johnson,[1] is a United States navigation satellite which forms part of the Global Positioning System.
SV08 is the eighth GPS Block III satellite to launch. The spacecraft is built on the Lockheed Martin A2100 satellite bus, and weighs in at 4,331 kg (9,548 lb).[2]
The manufacturing contract was awarded on February 2013.[3] The satellite was named "Katherine Johnson" in June 2020 following its successful core mate assembly.[4] Declared "Available for Launch" on 10 June 2021.[5]
Launch
The satellite's launch was originally awarded to ULA but it was later switched to SpaceX because of delays in ULA's Vulcan rocket certification. In exchange, ULA was awarded another GPS launch originally planned for Falcon Heavy.
USA-545 was launched by SpaceX on 30 May 2025 at 17:37 UTC, atop a Falcon 9 rocket,[6] in a mission named GPS III-7 as it was their 7th GPS launch.[7]
The launch took place from SLC-40 at Cape Canaveral Space Force Station.[7][6]
References
- ↑ "Search of SATCAT – USA 545". CelesTrak. Retrieved 5 June 2025.
- ↑ "GPS Block III SV04 | Falcon 9". Everyday Astronaut. 4 November 2020. Retrieved 25 March 2021.
- ↑ "Air Force Awards Lockheed Martin Contracts for Next Set of GPS III Satellites". GPS World. 26 February 2013. Retrieved 2 December 2017.
- ↑ "GPS III SV08 Core Mate Complete, Space Vehicle Named for NASA Trailblazer". Space and Missile Systems Center. Los Angeles Air Force Base. 10 June 2020. Retrieved 12 June 2020.
This article incorporates text from this source, which is in the public domain. - ↑ "Military Communications & Positioning, Navigation, and Timing Overview & GPS Enterprise Update" (PDF). U.S. Space Force Space Systems Command. 2022-11-16. Retrieved 2023-03-21.
- 1 2 "Falcon 9 Block 5 – GPS III SV08 (USA-545)". Next Spaceflight. Retrieved 5 June 2025.
- 1 2 "GPS III-7 Mission". SpaceX. Retrieved 5 June 2025.
NAVSTAR Global Positioning System satellites | |
|---|---|
| Block I | |
| Block II | |
| Block IIA | |
| Block IIR | |
| Block IIRM | |
| Block IIF | |
| Block III | |
| Block IIIF | |
Italics indicate future missions. Signs † indicate launch failures. | |
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