Io is a retrograde rotator , with its pole pointing towards one of ecliptic coordinates ( Î , Î '' ) = ( -45 Â , 105 Â ) or ( -15 Â , 295 Â ) with a 10 Â uncertainty ( 1 ) . Io is a retrograde rotator , with its pole pointing towards one of ecliptic coordinates ( Î , Î '' ) = ( -45 Â , 105 Â ) or ( -15 Â , 295 Â ) with a 10 Â uncertainty .