The first Emperor, Augustus, reduced the size of the Senate from 900 members to 600 members, even though there were about 100 to 200 active senators at one time, after this point, the size of the Senate was never again drastically altered.
The first Emperor reduced the size of the Senate from 900 members to 600 members. There were about 100 to 200 active senators at one time. This point was never again drastically altered. The size of the Senate was this point. Augustus was the first Emperor.