Tried to compute the possible launch location. By using the visually perceived speed of movement of missile vs actual known TOR-M speed, I was able to compute angle relative to trajectory. This implied distance from launch site was approx. 6.5 km. One candidate: IRSG Secret Base pic.twitter.com/njetEIl0Vl— Christo Grozev (@christogrozev) 9 січня 2020 р.