ERS-1 (European Remote-Sensing Satellite-1)
Tracked with all available NORAD satellite data on Stellarium. Notice the linear movement as depicted by the red line — very characteristic of a satellite in orbit.
The ERS-1 was the first environmental monitoring satellite developed by ESA. The mission detected land and ocean surface change and provided observation data on oceans, polar ice, vegetation, geology, meteorology, and ecology.

Quick Facts
- Mission type: EO
- Agency: ESA
- Status: Mission complete
- Launch date: 17 Jul 1991
- End of life: 7 Mar 2000
- Domains: Atmosphere, Ocean, Land, Gravity & Magnetic Fields, Snow & Ice
Measurements
Cloud type, ocean imagery, surface temperature, vegetation type, snow and ice coverage, wind speed over sea, wave height, topography, ozone levels, atmospheric humidity, and more.
Instruments
MWR, ATSR/M, AMI/SAR/Image, AMI/Scatterometer, ERS Comms, ATSR, AMI/SAR/Wave, RA.
Source: eoPortal — ERS-1 Quick Facts