2MASS J18082002−5104378
2MASS J18082002−5104378 ( abbreviated J1808−5104 ) is an ultra metal-poor ( UMP ) binary star system , in the constellation Ara , about from Earth , and is a single-lined spectroscopic binary ( SB1 ) . 
<triplet> 2MASS J18082002−5104378 <subj> binary star system <obj> instance of <subj> Ara <obj> constellation