HD 106315 is notable for its possession of planetary system consisting of two, and quite possibly three, planets. Two of these are confirmed to be large and massiveplanets in close orbits of the star (both orbit well within the distance of Mercury from the Sun). The innermost, HD 106316 b, is more than ten times the mass of Earth and twice its diameter, and is typcially classified as a 'super Earth' (though it is not known whether or not it has a solid surface). The outermost - while still in an extremely close orbit of the star - is HD 106315 c, which is generally thought to be similar in structure to the ice giants of the Solar System (though, being so close to its star, it is more suitably described as a 'warm Neptune').
Positioned so near to the starHD 106315, these two planetsorbit extremely rapidly, with HD 106315 b completing its 'year' in nine days, while HD 106315 corbits once every twenty-one days. The dynamics of the orbits of these two planets suggest that a third planet, more distant and massive than either of the inner pair, is also to be found within the system, though the existence of this third planet has yet to be confirmed.