https://www.mprnews.org/story/2019/09/02/npr-amateurs-identify-u-s-spy-satellite-behind-president-trumps-tweet
meant to publish this the other day.
The image almost certainly came from a satellite known as USA
224, according to Marco Langbroek, a satellite-tracker based in the
Netherlands. The satellite was launched by the National Reconnaissance
Office in 2011. Almost everything about it remains highly
classified, but Langbroek says that based on its size and orbit, most
observers believe USA 224 is one of America's multibillion-dollar KH-11
reconnaissance satellites.