R Leonis Minoris
R LMi is a fine northern Mira variable with a substantial range, and a period just over one year (372 days). R LMi shows cycle-to-cycle variations like many Mira variables do, and so it never quite puts on the same show from year to year. The star is a known maser source, and it's also been studied with interferometry and found to be asymmetric -- if you were to have a "close up" view of the star, its face would have significant variations across it.
Prepared By: Matthew Templeton