Harold Levison References Harold Levison American astronomer Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: comet/ DynamicsIn 1996 American astronomer Harold Levison introduced a new taxonomy that involved a quantity called the Tisserand parameter: Read MoreIn 1996 American astronomer Harold Levison introduced a new taxonomy that involved a quantity called the Tisserand parameter: Read More