Stella is Latin for star, and it's traditionally associated with guidance -- a fixed point used for orientation rather than mere decoration. The name is often read as carrying a steady kind of brilliance, brightness that helps others find their way rather than brilliance sought for its own sake.
Make the Sun, or any of the superiors to signify princes and great persons. Scribes and rusticks, [are shown by] the inferior planets, and chiefly the Moon. - William Lilly (1602.-1681.)