That's really neat! Is the code available anywhere? Are you propagating the TLEs with the SGP4/SDP4 propagator? Gonna tweet this now to share within the EU project I'm in, focussed on asteroids and space debris, so there could definitely be some pull requests around the corner!
Awesome :) I've added the github repo to my comment!
And yes, we were using satellite.js [1] which provided us with the propagation functionality together with a static set of TLEs from space-track [2] - I'll add an github issue for adding support for dynamic aggregation of that data right away actually :)
