Found in 1952
January 12, 1975 – first automatic docking of 7K–T spacecraft and “Salyut - 4” long-term space station. Print
12.01.2012

On January 12, 1975, first automatic docking of 7K–T spacecraft  and “Salyut - 4” long-term space station took place, using  “Igla” mutual  radio measuring  system..