archive with .orig extension

i am moving old file from folder to archive file by this command
ls -rt | grep -v '^archive$' | sed '$d' | xargs -I{} mv {} archive

can I add .orig extension to all file and then move into archive folder.

Where would be adjectly I place my syntex.

ls -rt | grep -v '^archive$' | sed '$d' | xargs -I{} mv {} archive/{}.orig

I guess archive is the folder, then just add "/{}.orig" in the end