The Astrology of Space - Matrix Software

The Astrology of Space
Variable Stars
The term "Variable Star" originally referred to those
stars that vary in their brightness. All stars vary in one
way or another. There are about 20,000 recognized
variable stars listed in the well-known Catalogue of
Variable Stars . The major types of variable stars are
listed below.
Individual variable stars within each constellation are
named by letters and numbers that indicate their
order of discovery. The first variable found within any
constellation has the letter R assigned to it (example:
R Coronae Borealis). Subsequently discovered
variables take the letters S, T … to Z; then RR, RS,
RT …. SS, ST, and so on through ZZ.
After ZZ, variable stars are named starting from the
beginning of the alphabet with AA, AB, AC … through
AZ, then BB, BC through BZ, and son on through QZ.
The preceding will take care of 344 stars in each of
the constellations. If there are still more variables,
they receive numbers from 335 on, preceded by the
letter "V" and followed by the constellation. An
example would be V 335 Cygni, being the 335th
variable star discovered in the constellation Cygnus.
Pulsating Variables
C Classical Cepheids, No. 696
I (L) Irregular Variables, No. 1687
M Mira Ceti , No. 4600
SR Semi-regular Variables , No. 4423
RR RR Lyrae Variables , No. 4423
RV RV Tauri Stars , No. 100
C Cephei Stars, No. 14 UV
SC Scuti Stars, No. 12
CV CVn Stars, No. 28
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