emamajek on 30-Aug-2021 05:51:23 GMT about UCAC4 090-036608
The pre-MS star (2018A&A...620A.172Z) Gaia DR2 5842864992558549120 appears to be a common proper motion (& parallax) companion to gam Mus, at separation 24".0081+-0".0003 at PA=348.16 deg (with respect to gam Mus).
As gam Mus itself is a spectroscopic binary (B5V + early A;
1975ApJ...197..137S
), it appears that gam Mus is at least a triple system.
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View annotation on UCAC4 090-036608 object