Bayer Designation - Other Bayer Designations

Other Bayer Designations

The Latin-letter extended designations are rarely used, but there are some exceptions such as h Persei (which is actually a star cluster) and P Cygni. Uppercase Latin Bayer designations never went beyond Q; names such as R Leporis and W Ursae Majoris are variable star designations, not Bayer designations.

A further complication is the use of numeric superscripts to distinguish between stars with the same Bayer letter. Usually these are double stars (mostly optical doubles rather than true binary stars), but there are some exceptions such as the chain of stars π1, π2, π3, π4, π5 and π6 Orionis.