MACHO-1997-BLG-41
MACHO-1997-BLG-41 , commonly abbreviated as 97-BLG-41 or MACHO-97-BLG-41 , was a gravitational microlensing event located in Sagittarius which occurred in July 1999 . 
<triplet> MACHO-1997-BLG-41 <subj> Sagittarius <obj> constellation