In biology it is a genus of microorganisms that develop in mud and sediments. They belong to the family Rotaliidae. It is also a form of personification of the German city of Hamburg. An asteroid is named after the city of Hamburg.
Hammonia-is the asteroid discovered by astronomer J. Palisa on October 21, 1911-
Hammonia: Asteroid number 723 of the series. -(Hammonia h, uppercase).