| GOES-G | |
| Mission Type: | Weather satellite |
| Operator: | NOAA / NASA |
| Mission Duration: | Failed to orbit 7 years (planned) |
| Spacecraft Bus: | HS-371 |
| Manufacturer: | Hughes |
| Launch Date: | UTC[1] |
| Launch Rocket: | Delta 3914 D178 |
| Launch Site: | Cape Canaveral LC-17A |
| Launch Contractor: | McDonnell Douglas |
| Orbit Epoch: | Planned |
| Orbit Reference: | Geocentric |
| Orbit Regime: | Geostationary |
| Apsis: | gee |
GOES-G was a weather satellite to be operated by the National Oceanic and Atmospheric Administration. The satellite was designed to sense and monitor meteorological conditions from a geostationary orbit, intended to replace GOES-5 and provide continuous vertical profiles of atmospheric temperature and moisture. It was lost due to the launch failure of a Delta 3914 rocket on 3 May 1986.
Launch occurred on May 3, 1986 at 22:18 GMT,[2] aboard Delta 178, the first NASA launch following the Challenger disaster. Seventy-one seconds into the flight, the first stage RS-27 engine shut down prematurely due to an electrical fault, and the rocket was destroyed by range safety.[3] [4]