Wolf 1069 b orbits its star in just 15 days, much closer than Mercury does to our Sun. Since its host star is so dim, relatively speaking, scientists believe that it’s inside the habitable zone.

Each orbit the planet begins out beyond the habitable zone, where it is too cold for liquid ... Earth's orbital eccentricity ...

These stars are cooler than the Sun, so planets can be in very close orbits and still be potentially habitable (All seven TRAPPIST planets would all fit inside the orbit of Mercury around the Sun).

Each orbit the planet begins out beyond the habitable zone ... Earth's orbital eccentricity is 0.017; Mars' is 0.055, and Mercury's is 0.206. HD 20794d's orbit is more elongated than any planet ...