emamajek on 31-Mar-2019 02:44:19 GMT about StKM 1-649B
Bakos+2010 (2011ApJ...742..116B) reports:
"HAT-P-20 has a close-by faint and red companion star at ∼6.86′′ separation [Note: SIMBAD entry 2MASS J07273963+2420171]. Based on the Palomar sky survey archival plates, we confirm that they form a close common-proper motion pair, thus it is very likely that the two stars are physically associated. The binary has appeared in the Washington Double Star compilation (WDS) as POU 2795, and was discovered by Pourteau (1933). Furthermore, based on the summary of obser-vations in the WDS, there is already a hint of orbital motion of the companion to HAT-P-20 over the last century. The position angle of the companion changed from PA = 323◦ to PA=320◦ over the course of 89 years (between 1909 and 1998), and it seems to be retrograde on the sky (clockwise)."
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