Posted on 22/06/2017 by Marcello
Paper Two-Line Elements
Until 1987 NASA sent us weekly patches of the Two-Line-Elements (updated orbit information coming in two lines per object) on paper. A bit too slow for near real-time conjunction analysis like the space debris office is now providing on a routine basis. At that time the Mission Analysis Office of Walter Flury was browsing through the paper information for interesting objects. The DISCOS database with daily e-mail updates came a few years later.