GOES 15

Last updated
EWS-G2
GOES-P.jpg
The GOES-15 satellite during pre-launch processing.
NamesGOES-P
GOES-15 (before September 22, 2023)
Mission type Weather satellite
Operator NOAA  / NASA
COSPAR ID 2010-008A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 36411
Mission duration10 years (planned)
Elapsed: 15 years, 8 months, 9 days
Spacecraft properties
Spacecraft typeGOES-N series
Bus BSS-601
Manufacturer Boeing
ITT Corporation
Power2.3 kilowatts from solar array
Start of mission
Launch date4 March 2010, 23:57 (2010-03-04UTC23:57Z) UTC
Rocket Delta IV-M+(4,2)
Launch site Cape Canaveral, SLC-37B
Contractor United Launch Alliance
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude62° East
Semi-major axis 42,166 kilometres (26,201 mi)
Perigee altitude 35,791.0 kilometres (22,239.5 mi)
Apogee altitude 35,800.4 kilometres (22,245.3 mi)
Inclination 0.2°
Period 1,436.2 minutes

EWS-G2 (Electro-optical Infrared Weather System Geostationary) [1] is a weather satellite of the U.S. Space Force, formerly GOES-15 (also known as GOES-P before becoming operational). The spacecraft was constructed by Boeing, and is the last of three GOES satellites to be based on the BSS-601 bus. It was launched in 2010, while the other BSS-601 GOES satellites—GOES-13 and GOES-14—were launched in May 2006 and June 2009 respectively. [2] It was the sixteenth GOES satellite to be launched.

Contents

Launch

GOES-15 launches from Cape Canaveral Air Force Station SLC-37B, 4 March 2010. GOES-P launched by Delta IV rocket.jpg
GOES-15 launches from Cape Canaveral Air Force Station SLC-37B, 4 March 2010.

GOES-15 was launched atop a Delta IV-M+(4,2) rocket flying from Space Launch Complex 37B at the Cape Canaveral Air Force Station. [3] [4] The launch occurred at 23:57 UTC on 4 March 2010, forty minutes into a sixty-minute launch window. Upon reaching geostationary orbit on 16 March, it was redesignated GOES-15. [4] [5] On 6 December 2011, it was activated as the GOES-West satellite, replacing GOES-11. [6]

Design

At launch, the mass of the satellite was 3,238 kilograms (7,139 lb). It has a design life of ten years. Power is supplied by a single gallium arsenide solar panel, which provides up to 2.3 kilowatts of power. A 24 cell nickel hydrogen battery is used to provide power when the satellite is not in sunlight. [7] Instruments aboard GOES-15 include a five channel multispectral imager to capture visible light and infrared images of the continental United States, a sounder to take readings of atmospheric temperature and moisture, a solar x-ray imager to detect solar flares, and instruments to monitor the magnetosphere, cosmic background radiation and charged particles. [7]

Operations

NOAA began to transition GOES-15 out of operational status at the GOES-West position in late 2018 to replace it with GOES-17. [8] [9] GOES-15 began an eastward drift maneuver on 29 October 2018 to 128° W, with all of its sensors still functioning. [9] GOES-15's drift is intended to provide additional separation from GOES-17 to prevent communication interference. GOES-15 drifted east at a rate of 0.88° per day until 7 November 2018, when it reached its new operating location of 128° West. Once GOES-17 reached its assigned longitude on 13 November 2018, additional tests were performed; provided that testing goes well, GOES-17 will become operational as GOES-West on 10 December 2018. [9] Both GOES-17 and GOES-15 operated in tandem through early 2020 to allow for assessment of the performance of GOES-17 as the GOES-West operational satellite. [9] On March 2, 2020, GOES-15 was deactivated and moved to a storage orbit, with plans to re-activate it in August 2020 to back up GOES-17 operations due to a known flaw causing many sensors to become unreliable at night during certain times of the year. [10] [11] On 22 September 2023 the satellite's ownership was officially transferred to the U.S. Space Force, taking its current designation as part of the EWS-G network. As a consequence, the spacecraft has started drifting over the Indian Ocean to reach its new assigned orbit and it's scheduled to become operational in November 2023. [1]

Media

Launch video (5 min 30 s)

References

  1. 1 2 "Space Force accepts second weather satellite through NOAA partnership". U.S. Space Force. 22 September 2023. Retrieved 26 September 2023.
  2. ↑ Krebs, Gunter. "GOES N, O, P, Q". Gunter's Space Page. Retrieved 4 March 2010.
  3. ↑ "GOES-P Launch Blog". NASA. Archived from the original on 2010-03-04. Retrieved 2010-03-04.
  4. 1 2 Ray, Justin. "Mission Status Center". Delta Launch Report. Spaceflight Now. Retrieved 19 March 2010.
  5. ↑ "LIVE: Delta IV set to launch GOES-P weather satellite". NASAspaceflight.com. 4 March 2010. Retrieved 4 March 2010.
  6. ↑ "NOAA activates GOES-15 satellite; deactivates GOES-11 after nearly 12 years in orbit". NOAA. Retrieved December 7, 2011.
  7. 1 2 "GOES-P Mission Operations Booklet" (PDF). United Launch Alliance. Archived from the original (PDF) on 17 July 2011. Retrieved 4 March 2010.
  8. ↑ "Get Ready to Drift: GOES-17 Begins Move to Its New Operational Position | NOAA National Environmental Satellite, Data, and Information Service (NESDIS)". www.nesdis.noaa.gov. Retrieved 28 July 2020.
  9. 1 2 3 4 "GOES-17 Transition to Operations │ GOES-R Series". www.goes-r.gov. Retrieved 2018-10-25.
  10. ↑ "GOES-16/17 Transition". NOAA. 2020-02-19. Archived from the original on 2020-03-04. Retrieved 2020-03-03.
  11. ↑ "GOES-15 is no longer sending data". CIMSS. 2020-03-02. Retrieved 2020-03-03.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.