FU Orionis
FU Orionis is a variable and binary star system in the constellation of Orion , that in 1937 rose in apparent visual magnitude from 16 . 5 to 9 . 6 , and has since been around magnitude 9 . 
<triplet> FU Orionis <subj> binary star <obj> instance of <subj> Orion <obj> constellation <triplet> Orion <subj> constellation <obj> instance of