The three planets are identified as Wolf 1061b, Wolf 1061c and Wolf 1061d. Wolf 1061b has at least 1.36 times the mass of Earth and an orbital period of 4.888 days (0.0355 AU); Wolf 1061c has at least 4.25 times the mass of Earth and an orbital period of 17.867 days (0.0843 AU); and Wolf 1061d has at least 5.21 times the mass of Earth and an orbital period of 67.274 days (0.2039 AU). The values in parentheses indicate the distance of each planet from Wolf 1061 in astronomical units (AU), whereby one AU is the average Earth-Sun distance. All three planets are small enough to potentially be rocky worlds.
From the mass-radius relation for planets, the radii of the three planets are estimated to be 1.44 (inner planet), 1.64 (middle planet) and 2.04 (outer planet) times the radius of Earth. The middle planet, Wolf 1061c, is of particular interest because it is likely a potentially habitable rocky planet and it joins a small but growing group of potentially habitable rocky planets orbiting nearby stars cooler than the Sun. At present, Wolf 1061c is one of the closest known potentially habitable rocky planets.
Wright et al. (2015), “Three planets orbiting Wolf 1061”, arXiv:1512.05154 [astro-ph.EP]