Can we see asteroid 1998 OR2 with unaided eye? Will I be able to see the asteroid 1998 OR2 with the naked eye on April 29? 

If so, where can I find more information on when and where I'll be able to see it?
According to the page on The Sky Live the asteroid is currently at a visual magnitude of +11, which is also what Sky Safari says. It is not due to get much brighter so no, it will not be visible with the naked eye. According to the predicted light curve, there is a chance it will get to naked eye brightness (from a dark sky site) around April 2079.... So there is quite a wait! And these predictions are based on current models which can change with new information.



You can use theskylive to check on things like comets and asteroids, or if you prefer a mobile app, I always recommend Sky Safari