ROXs 12

ROXs 12 is a binary system of pre-main-sequence stars. It belongs to the Rho Ophiuchi cloud complex. The surface temperature of the primary star is 3900$$ K. ROXs 12 is much younger than the Sun with an age of 7.6$$ million years.

A multiplicity survey detected a stellar companion to ROXs 12 in 2017, named 2MASS J16262774–2527247, at a projected separation of 5100 AU.

Planetary system
In 2005, one planet was discovered on a wide orbit by direct imaging, was confirmed in 2013 and named ROXs 12 b. The planet's measured temperature is 3100$$ K.

The primary star is surrounded by a protoplanetary disk, although it is not very massive, being less than 4. The secondary star also has a protoplanetary disk, and it is much more massive, equal to 10-1.07$$. The disk is inclined to the equatorial plane of the star.