 Despite the aborted mission, Bulgaria became the fourth Interkosmos country (after Czechoslovakia, Poland and East Germany, in that order) and the sixth in the world to send a citizen in space.Ivanov's flight lasted one day, 23 hours and one minute, completing 31 orbits.The Mir space station core module was launched in February 1986 and the Spektar-256 system, a follow-up to the Spektar-15, was to be fitted on the station.