The star collectively known as Jabbah or Nu Scorpii is a highly complex multiple system containing new fewer than seven stars in total. These stars are divided into two widely separated 'subsystems', each a multiple system in its own right. The brighter of these components is designated 'AB', consisting of the triple system Jabbah A and its companion Jabbah B. The fainter 'CD' component is a nested binary, where Jabbah C is a single star, and its companion Jabbah D forms a binary system within the wider CD pair.
Jabbah shines against the clouds of the Blue Horsehead Nebula, IC 4592, which are illuminated by the star's light. The multiple nature of the Jabbah system is not easily distinguishable in this image, but at higher zoom levels, it is possible to detect the fainter CD system lying slightly northward of the much brighter AB component. Imagery provided by Aladin sky atlas
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