Variable-star designation

Naming

• Stars with existing Greek letter Bayer designations are not given new designations.
• Otherwise, start with the letter R and go through Z.
• Continue with RR–RZ, then use SS–SZ, TT–TZ and so on until ZZ.
• After ZZ return to the beginning of the Latin alphabet and use AA–AZ, BB–BZ, CC–CZ, and so on, until reaching QZ, but omitting the letter J in either first or second position. The second letter is never nearer the beginning of the alphabet than the first, e.g., no star can be BA, CA, CB, DA and so on.
• Abandon the Latin letters after all 334 combinations of letters and start naming stars with V335, V336, and so on.
• After the combination/number, put the genitive of the constellation name to get the star name.