GOES-19 explained

GOES-19
Names List:Geostationary Operational Environmental Satellite-U
Mission Type:Earth weather forecasting
Operator:NOAA / NASA
Mission Duration:15 years (planned)
(in progress)
Spacecraft Bus:A2100
Manufacturer:Lockheed Martin
Launch Date:UTC[1] (5:26pmEDT)
Launch Rocket:Falcon Heavy
Launch Site:Kennedy Space Center, LC-39A
Launch Contractor:SpaceX
Entered Service:7 April 2025[2]
Orbit Reference:Geocentric orbit
Orbit Regime:Geostationary orbit
Orbit Longitude:75.2° west (planned)[3]
Orbit Eccentricity:0.0045031[4]
Orbit Inclination:0.1204°
Orbit Period:24 hours
Apsis:gee
Orbit Epoch:July 12, 2024
Insignia:GOES-U logo.png
Insignia Caption:GOES-U mission insignia
Insignia Size:200px
Programme:GOES Series
Previous Mission:GOES-18

GOES-19 (designated GOES-U prior to reaching geostationary orbit) is a weather satellite, the fourth and last of the GOES-R series of satellites operated by the National Oceanic and Atmospheric Administration (NOAA). The GOES-R series will extend the availability of the Geostationary Operational Environmental Satellite (GOES) system until 2036. The satellite is built by Lockheed Martin, based on the A2100 platform.[5] [6] The satellite was placed into service as the GOES-East position and GOES-16 was stored as backup on April 7, 2025.[7]

Launch

The satellite was successfully launched into space atop a SpaceX Falcon Heavy rocket on 25 June 2024 at 21:26UTC (5:26pmEDT local time at the launch site),[1] from the Kennedy Space Center in Florida, United States. The redesign of the loop heat pipe to prevent an anomaly, as seen in GOES-17, was not expected to delay the launch as with GOES-T.[8] GOES-19 has a dry mass of and a fueled mass of .[9]

GOES-19 also carries a copy of the Naval Research Laboratory's Compact CORonagraph (CCOR) instrument designated as CCOR-1 which, along with the CCOR carried onboard Space weather Observations at L1 to Advance Readiness - 1 (SOLAR-1), will allow continued monitoring of solar wind after the retirement of the NASA-ESA SOHO satellite in 2025.[10] [11] CCOR-1 on GOES-19 provides a field of view of 3.7 to 18.7 solar radii, partially comparable to LASCO C3's field of view onboard SOHO, with a 33 arcsecond spatial resolution.[12]

Comet discoveries through CCOR-1

See also: List of Kreutz sungrazers. The CCOR instrument carried aboard GOES-19 has allowed for the discovery of several sungrazer comets by researchers analyzing CCOR imagery. As of 28 May 2025, GOES-19's CCOR-1 has found 47 comets.[13]

The faint comet 3I/ATLAS was observable from 18–24 October 2025 with GOES-19 as the satellite can see objects down to magnitude 12.[14]

Notes and References

  1. Web site: Powerful GOES-U weather satellite launches to orbit atop SpaceX Falcon Heavy rocket. Meredith. Garofalo. space.com. June 25, 2024.
  2. Web site: OSPO Administrative Message declaring GOES 19 Operational . NOAA Office of Satellites And Product Operations Satellite Alert Messages. 7 April 2025 . 7 April 2025.
  3. Web site: NOAA's GOES-U Reaches Geostationary Orbit, Now Designated GOES-19. NESDIS. NOAA. July 8, 2024. July 14, 2024.
  4. Web site: GOES-19 (GOES-U). n2yo.com. July 14, 2024.
  5. Web site: GOES-R, S, T, U Spacecraft Overview . Spaceflight101 . 17 January 2024 . 5 June 2024 . https://web.archive.org/web/20240605080913/https://spaceflight101.com/goes-r/goes-r-spacecraft/ . dead .
  6. Web site: Andrews . Hillary . 2024-03-27 . GOES-U weather satellite to launch June 25 after leak causes delay . 2024-04-08 . FOX Weather . en-US.
  7. Web site: NOAA’s GOES-19 satellite now operational, providing critical new data to forecasters . NOAA.gov . National Oceanic and Atmospheric Administration . 8 April 2025.
  8. Web site: Werner. Debra. Lockheed Martin halts work on GOES-T to wait for instrument fix. SpaceNews. 2019-01-09. 2019-05-26.
  9. Web site: GOES-R Series Spacecraft Overview . GOES-R Series . 17 January 2024.
  10. Vargas. Marco. The NOAA Space Weather Follow-On Program to Ensure Continuity of CME Imagery and Solar Wind Space-Based Observations. American Meteorilogical Society 99th Annual Meeting. 7 January 2019. AMS. 24 March 2020.
  11. Web site: Space Weather Follow On-Lagrange 1. NESDIS. NOAA. 24 March 2020.
  12. Web site: SWFO Instruments. NESDIS. NOAA. 22 February 2026. en.
  13. Web site: April and May 2025 Confirmations .
  14. https://groups.io/g/comets-ml/message/34189 Worachate Boonplod on Comets-ML