Obama looks about ten to me. I think I read somewhere that he saw his father around that age.
From one of his books-
“When I was ten, my father came back from Africa to visit us for Christmas.”
Pic is here too-
http://roadkillrefugee.wordpress.com/2008/03/30/washington-post-fact-check-on-obamas-father-focuses-on-minor-discrepancy-takes-potshots-at-father/