access state parameter object inside the controller angular js

Question

I am trying to access state parameter object. my config is as below

    .config(['$stateProvider', function ($stateProvider) {
    $stateProvider.state('app.charts-panel', {
        url: '/charts-panel/:{viewD}',
        templateUrl: 'modules/dynamic-dashboard/dynamic-dashboard-view/charts-panel/charts-panel.html',
        controller: 'chartsPanelCtrl'
    });
}])

i need to print my 'viewD' object. i tried to print it. result show as [object object]. how i correctly print this.

i tried to print using below code

    var dashboardDel=$stateParams.viewD;
$log.info(dashboardDel);

result show as [object object]