If this thing is indeed for real, we haven't too much time to get ready. Unless there is a gross amount of exaggeration on what the gravitational effects will be on the water bodies some of us are in pretty bad trouble in the near coming few years. Houston is close to the Gulf of Mexico and not very high above sea level.
This thing will accelerate its approach as it comes in exponentially. Then, it will SLINGSHOT around us and the Sun as it decelerates again. The gravitational forces will impart work onto the masses of our solar system as it swipes by. But, this will not slow it all down enough to save anything. However, if it stopped, mass attraction would be another game we DO NOT want to take place!
It all plays in step with the Myan time scale and what looks like WWIII on the horizon. A lot of other stuff we worry about now is about to take second position in the list now.