into the Low Mass X-ray Binary system V818 Scorpii (Scorpius X-1) is gained
from an examination of the visual databases of the American Association of
Variable Star Observers (AAVSO) and the Variable Star Section of the Royal
Astronomical Society of New Zealand (RASNZ). A correlation is found between
these visual estimates and EXOSAT X-ray observations. While such a correlation
has long been known to exist from B-magnitude photometric studies, no
such work is known with the AAVSO and the RASNZ data.