GPS Block IIIA.jpg
Artist's rendering of GPS-III SV01 in Space.
NamesNavstar 77
Mission typeNavigation
COSPAR ID2018-109A [1]
SATCAT no.43873
Mission duration15 years (planned)
Spacecraft properties
SpacecraftGPS-III SV01
Spacecraft typeGPS Block III
ManufacturerLockheed Martin
Launch mass4400 kg
Start of mission
Launch date23 December 2018, 13:51 UTC
RocketFalcon 9 Block 5
Launch siteCape Canaveral, SLC-40
Orbital parameters
Reference systemGeocentric orbit
RegimeMedium Earth orbit
(Semi-synchronous orbit)
Perigee altitude20,118 km (12,501 mi)
Apogee altitude20,196 km (12,549 mi)
Period716.7 minutes

USA-289, also known as GPS-III SV01 or Vespucci, is an United States navigation satellite which forms part of the Global Positioning System. It was the first GPS Block III satellite to be launched.[2]


SV01 is the first GPS Block III satellite to be launched. Ordered in 2008 and originally intended to be launched in 2014, numerous technical delays pushed launch back to 2018.[3]

The spacecraft is built on the Lockheed Martin A2100 satellite bus, and weighs in at 4,400kg (9,700lbs), making SV01 the heaviest GPS satellite ever launched.[4]


USA-289 was launched by SpaceX on 23 December 2018 at 13:51 UTC atop expendable Falcon 9 booster B1054. The launch took place from SLC-40 of the Cape Canaveral Air Force Station, and placed USA-289 directly into semi-synchronous orbit.


As of 2021, USA-289 was in a 55-degree inclination orbit with a perigee of 20,158 kilometers (12,525 miles) and an apogee of 20,222 kilometers (12,565 miles).[5] The satellite is the first GPS satellite to be able to broadcast the civilian L1C signal.[6]

GPS-III SV01 is launched on a Falcon 9.


  1. ^ "Navstar 77". NASA. 14 May 2020. Retrieved 26 September 2020. Public Domain This article incorporates text from this source, which is in the public domain.
  2. ^ "GPS III Space Vehicle No. 1 "Vespucci" Arrives in Florida". Los Angeles Air Force Base. Retrieved 19 December 2019. Public Domain This article incorporates text from this source, which is in the public domain.
  3. ^ "You are being redirected..." Retrieved 23 March 2021.
  4. ^ "GPS-3 (Navstar-3)". Gunter's Space Page. Retrieved 23 March 2021.
  5. ^ "Technical details for satellite NAVSTAR 77 (USA 289)". - Real Time Satellite Tracking and Predictions. Retrieved 23 March 2021.
  6. ^ "Signal, orbit and clock analysis of GPS-III SV01" (PDF). Copernicus.