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GOES 13
EWS-G1 (Electro-optical Infrared Weather System Geostationary) is a weather satellite of the U.S. Space Force, formerly GOES-13 (also known as GOES-N before becoming operational) and part of the National Oceanic and Atmospheric Administration's Geostationary Operational Environmental Satellite system. On 14 April 2010, GOES-13 became the operational weather satellite for GOES-East. It was replaced by GOES-16 on 18 December 2017 and on 8 January 2018 its instruments were shut off and it began its three-week drift to an on-orbit storage location at 60.0° West longitude, arriving on 31 January 2018. It remained there as a backup satellite in case one of the operational GOES satellites had a problem until early July 2019, when it started to drift westward and was being transferred to the U.S. Air Force, and then the U.S. Space Force.
GOES-13 arrived at 61.5° East longitude in mid-February 2020. The satellite was renamed EWS-G1 and became fully operational over the Indian Ocean basin on September 8, 2020. EWS-G2 (GOES-15) was drafted to replace it in September 2023.
EWS-G1 was removed from operational service on October 31, 2023.
GOES-N was launched aboard a Boeing Delta IV-M+(4,2) rocket, flying from SLC-37B at the Cape Canaveral. The launch occurred at 22:11:00 UTC on 24 May 2006.
The launch had been delayed significantly due to a number of issues. First, it had been scheduled to fly on a Delta III, but after three consecutive failures on its first three flights, the Delta III was canceled, with GOES launches being transferred to the Delta IV. Further delays were caused after the previous Delta IV launch, the maiden flight of the Heavy configuration, suffered a partial failure. Then, two launch attempts in August 2005 were scrubbed, the second attempt just four minutes and 26 seconds prior to liftoff.
After these launch attempts, the rocket's flight termination system batteries expired, requiring replacement. A strike by workers at Boeing subsequently pushed the launch back to May 2006.
At launch, the satellite had a mass of 3,133 kilograms (6,907 lb), and an expected operational lifespan of ten years, although it carries fuel for longer. It was built by Boeing, based on the BSS-601 satellite bus, and was the first of three GOES-N series satellites to be launched.
In December 2007, GOES-13 was called up to provide coverage of the East Coast of the United States during an outage of GOES-12 due to a thruster leak. After the problem with GOES-12 cleared, it resumed operations, and GOES-13 was deactivated again. It was also briefly activated in mid-May 2009 when GOES-12 developed another thruster problem, however, it did not need to take over operations, and was deactivated by the end of the month. In April 2010, GOES-13 replaced GOES-12 as GOES-East at 75.0° West. GOES-13 served actively as GOES-East from April 2010 to December 2017. In December 2017, GOES-16 replaced GOES-13 as GOES-East. On 14 December 2017, GOES-13's direct (GOES VARiable transmission format) GVAR was disabled. The GOES-13 GVAR and (Low Rate Information Transmission) LRIT were relayed through GOES-14 until 8 January 2018, at which time the GOES-13 GVAR relay through GOES-14 GVAR was disabled. GOES-13 ceased transmitting data, began drifting to its storage location at 60.0° West on 9 January 2018, and arrived there on 31 January 2018. GOES-13 remained at 60.0° West as a backup satellite, in case one of the operational GOES satellites malfunctioned.
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GOES 13
EWS-G1 (Electro-optical Infrared Weather System Geostationary) is a weather satellite of the U.S. Space Force, formerly GOES-13 (also known as GOES-N before becoming operational) and part of the National Oceanic and Atmospheric Administration's Geostationary Operational Environmental Satellite system. On 14 April 2010, GOES-13 became the operational weather satellite for GOES-East. It was replaced by GOES-16 on 18 December 2017 and on 8 January 2018 its instruments were shut off and it began its three-week drift to an on-orbit storage location at 60.0° West longitude, arriving on 31 January 2018. It remained there as a backup satellite in case one of the operational GOES satellites had a problem until early July 2019, when it started to drift westward and was being transferred to the U.S. Air Force, and then the U.S. Space Force.
GOES-13 arrived at 61.5° East longitude in mid-February 2020. The satellite was renamed EWS-G1 and became fully operational over the Indian Ocean basin on September 8, 2020. EWS-G2 (GOES-15) was drafted to replace it in September 2023.
EWS-G1 was removed from operational service on October 31, 2023.
GOES-N was launched aboard a Boeing Delta IV-M+(4,2) rocket, flying from SLC-37B at the Cape Canaveral. The launch occurred at 22:11:00 UTC on 24 May 2006.
The launch had been delayed significantly due to a number of issues. First, it had been scheduled to fly on a Delta III, but after three consecutive failures on its first three flights, the Delta III was canceled, with GOES launches being transferred to the Delta IV. Further delays were caused after the previous Delta IV launch, the maiden flight of the Heavy configuration, suffered a partial failure. Then, two launch attempts in August 2005 were scrubbed, the second attempt just four minutes and 26 seconds prior to liftoff.
After these launch attempts, the rocket's flight termination system batteries expired, requiring replacement. A strike by workers at Boeing subsequently pushed the launch back to May 2006.
At launch, the satellite had a mass of 3,133 kilograms (6,907 lb), and an expected operational lifespan of ten years, although it carries fuel for longer. It was built by Boeing, based on the BSS-601 satellite bus, and was the first of three GOES-N series satellites to be launched.
In December 2007, GOES-13 was called up to provide coverage of the East Coast of the United States during an outage of GOES-12 due to a thruster leak. After the problem with GOES-12 cleared, it resumed operations, and GOES-13 was deactivated again. It was also briefly activated in mid-May 2009 when GOES-12 developed another thruster problem, however, it did not need to take over operations, and was deactivated by the end of the month. In April 2010, GOES-13 replaced GOES-12 as GOES-East at 75.0° West. GOES-13 served actively as GOES-East from April 2010 to December 2017. In December 2017, GOES-16 replaced GOES-13 as GOES-East. On 14 December 2017, GOES-13's direct (GOES VARiable transmission format) GVAR was disabled. The GOES-13 GVAR and (Low Rate Information Transmission) LRIT were relayed through GOES-14 until 8 January 2018, at which time the GOES-13 GVAR relay through GOES-14 GVAR was disabled. GOES-13 ceased transmitting data, began drifting to its storage location at 60.0° West on 9 January 2018, and arrived there on 31 January 2018. GOES-13 remained at 60.0° West as a backup satellite, in case one of the operational GOES satellites malfunctioned.
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