Site collection entry in Central admin moss 2007

Hi Guys,

I had a site collection in a web application. Now, i have deleted that site collection however it shows an entry in the "Site Collection List" under that particular web application

The Right hand side small box that displays the name, URL and the description etc is blank for that site collection. The site collection does not exist too when i try and hit the URL. How can i remove that entry

Thanks in advance