With a large antenna, there may be some reservations about the beam width size because it is only 0.1 degrees. Luckily, the antenna is approximately 10.5 light years away which allows plenty of distance for the beam width to open up to a diameter of 18.2(1011) km which dwarfs the size of the earth. Therefore the steering of the antenna on the satellite is not important, but the antennas on Earth must be aimed towards the satellite. This can easily be done by large motors and controls from the Earth base station.
