Kepler-186 System

An M1 red dwarf found by Kepler to have five rocky planets. These planets are labelled b through f as you go further out. The smallest one, b, is only 8% larger than the Earth and the largest one d is 40% larger. The inner four are tidally locked, but possibly not the outer one. There might be one additional non-transiting planet inside the furthest one's orbit. The outermost planet f is the first Earth-sized planet found in the habitable zone and currently the smallest known Red Dwarf planet in the habitable zone. The planet does not receive as much heat as most PHPs though, so it is ranked low on the ESI.

My Thoughts[]

Wow, how did I miss this one? Guess we're getting a lot of potentially habitable planets now that it's hard to keep up. This one's colder than most PHPs, but since it's so far out, there's a 50% chance it's not tidally locked though. I wonder if that's taken into consideration when determining Earth Similarity Index? It still probably has a pretty long day though, maybe it's like Mercury?

Kepler-186 System Web Pages[]

http://en.wikipedia.org/wiki/Kepler-186