The current emperor on the throne is typically referred to by the title Tennō Heika (天皇陛下, literally "His Majesty the heavenly sovereign") or Kinjō Heika (今上陛下, literally "his current majesty") or simply Tennō when speaking Japanese.
Hie gëtt als Tennō Heika (天皇陛下, "Seng Majestéit, den himmlesche Souverain") oder Kinjō Heika (今上陛下, "Seng aktuell Majestéit") oder einfach Tennō genannt.