Some difficulties in explaining the observed spectroscopic features led to the conjecture that a third star may be present in the system; four decades later this conjecture was found to be correct.
在解釋觀測到的光譜特徵時遇到了一些困難，導致人們猜測系統中可能存在第三顆恆星；40年後，這個猜測被確認是正確的。