> it's not unthinkable that certain satellites are simply not tracked or published by NASA. Which is indeed true[0], but due to the attention of amateur obser

> it's not unthinkable that certain satellites are simply not tracked or published by NASA. Which is indeed true[0], but due to the attention of amateur observers there is very little in orbit that goes untracked http://www.satobs.org/seesat/seesatindex.html http://www.satobs.org/seesat/seesatindex.html Its members compile many elements from direct observation, including those for the 'unmentioned' satellites. [0] actually they're not tracked by NASA but by USSPACECOM, and to use their elements one has to accept a restrictive non-dissemination agreement. Many observers do not, and use community-calculated elements instead