The Takara Morlatta, also known as the Comet of Destruction, was the name of a comet that was known to the Romulan race.
This astronomical phenomena formerly travelled through the Romulan Star Empire home system in a 40-year cycle. According to the Eridam Papers, it was seen to the early Romulans as a bearer of death and destruction. It was later destroyed by the Romulan Star Navy shortly after interplanetary travel was established.
It served as the basis for a starship class called the Takara Morlatta-class vessels. (FASA RPG module: Romulan Ship Recognition Manual)