Satellite Observation: A database of observation satellites. “I have assembled a database of digital high to medium resolution (GSD<50m) Earth observation satellites. The data comes mostly from eoPortal, and the World’s Meteorological Organization’s OSCAR database (for civilian satellites), and Gunter’s Space page helped a lot to make sure it is almost complete. I also used Spaceflight101‘s detailed articles for some satellites." There are 437 entries so far.