One thing that bugged me about the 2009 Star Trek film was why Checkov runs over to take manual control of the teleporter to beam up Kirk as he’s freefalling to

One thing that bugged me about the 2009 Star Trek film was why Checkov runs over to take manual control of the teleporter to beam up Kirk as he’s freefalling towards the planet: surely a a machine at their level of technological sophistication would be able to calculate the trajectory and beam them up in real time without too much trouble.