It's 2 km wide, traveling fast enough to destroy a continent and trigger global climate changes, and will hit us in February 2019. Too bad we don't have an aggressive space program, isn't it? This is the most threatening object so far detected. However, future observations will almost assuredly reduce the uncertainties in the orbit and the object will pass a comfortable distance away from us. But there will be a day when observations reduce the orbital uncertainties to the point where we can say an object will hit us. Too bad we don't care enough to do anything about it.