Wow, this asteroid is getting a lot of press! That’s good! The asteroid is not a problem for us and won’t be for quite some time. Check out the NEODyS-2 site page for 2014 JO25. NEODyS-2 is a good place to bookmark as is Earth’s Busy Neighborhood.
The asteroid is large, around 812 meters in diameter and will be about 1.61 million km / million miles (4.57 Lunar distances from us) at the closest so it is comfortably far away.
The great part about this fly-by is it will give us the opportunity to really study something this large and therefore potentially hazardous up-close, perhaps even radar images.