User:Exoplanetaryscience/2MASS J18352154-3123385

2MASS J18352154-3123385, shortened 2MASS J1835, is a binary M-type main sequence star system about 27 light years from the Earth. It was first reported due to its high proper motion in 2010 by J. D. Kirkpatrick et al. It was then independently discovered from its X-ray radiation on June 10, 2015. Further investigation has shown the star to be a binary star with components M6.5 and M8, respectively. They orbit each other in 1,400-1,800 years, and reached their closest point in mid-1968 assuming a constant proper motion. During their closest approach, they were separated by less than 0.1 arcsecond, compared to their current separation of 2 arcseconds.

Despite the fact that A and B are magnitude 12.5 and 13, respectively, their vicinity to the Earth was not noticed until 2015 due to the fact that it is in a relatively dense star field less than 15 degrees away from the galactic center.

2MASS J1835A is likely a Flare star, due to its clear X-ray radiation common of flare stars. It has never been observed to flare directly, however.