Presented at the 85the
AAVSO Spring Meeting, April 13, 1996
SU Lyrae was discoverd to
vary on plates taken in 1905. Over the years it has been classified as a nova,
a dwarf nova (UG?), and recently as a Mira type. Over the last 30 years both
the period and amplitude have appeared to change. I have inspected over 30
years of AAVSO data. This paper summarizes the results of my investigation.