Okay, I'm nervous. I feel a bit like I'm standing in front of an auditorium and am about to make a speech... I'm a fiction writer... Wait! Don't go yet! I'm one of these hillbilies who *needs* some help! I'm working on a science fiction bit and I do believe in research. I'm always bothered when writers have access to the science, but opt to ignore it. This is worse for hard science fiction, which is what I'm working on... Given that Epsilon Indi is considered a solid candidate to have a tidally-locked planet in orbit around it. I dubbed it Epsilon Indi A and located it about .28 AU from the star. Due to the fact that I'm writing about colonizing some of these red-dwarf worlds, I need it to be quasi-Earth-like. And yes, I realize that means the world has much less mass than Earth, water on the surface - enough for liquid water near the light-dark terminators, less water on the sun side, and some frozen water on the dark side - and an atmosphere strong enough to repel most EM radiation. Given all that - else no one would ever have tried to colonize it... And given that Epsilon Indi A's orbit around the star has no "wobble" except for its own elliptical orbit, and I think we could call it stable. I also decided to give it a very slight axial tilt - 4 to 5%, no more than that. Libration would have a different perspective entirely, since unlike the Earth-Moon scenario, the observers would be on the smaller body and observing the larger. But it should be in play. Based on Kepler's Third Law, one year would be about 54.07 days. Given all that, it appears to me that any humans existing on the world near the terminator (which is the idea) would perceive that short, 54-day year. But during that year, would the effects of libration and tilt create four short "seasons?" Assuming that they're on (or very near) the terminator itself, it seems that they would experience... Summer - when the red dwarf is entirely in the sky, but not too high, Autumn - when Epsilon Indi is on the horizon, half above and half below, Winter - when Epsilon Indi is fully below the horizon and the sky is dark, Spring - when Epsilon Indi is back on the horizon, in the same position as Autumn. ...all of which would create "seasons" of around 13 days. Estimating that the libration effect meant that the terminator actually shifted about 4 degrees on both the leading and trailing edges (totally an estimate unrelated to the axial tilt), and the tilt affected things as well... I would assume that if one traveled north or south up the leading and trailing edges, one would see a fairly dramatic change of the "seasonal" appearance. It seems to me that if one were at a higher latitude, their would appear to be more activity on the horizon during the Spring and Autumn, and during Summer, the red star would appear to move around the sky somewhat. ...and at the Equator, things would be much more stable. ...But, if one was merely to travel east or west at any latitude, either the summers or winters would change drastically, lengthening or shortening, depending on which edge and which hemisphere you were in. Here's the big question: How Wrong Am I? I've spent days working on this, using this forum, some others, and several other websites - including (ew) Wikipedia. I'm taking this seriously. Since red dwarfs are far more common than other types, I wanted someone to address this. But due to the radiation given off by the stars at closer orbits - which is necessary to support life - it would be difficult. If you have an answer for me, or a way to correct, or any sort of "shut up and write detective fiction" advice, I'd love it. I'm not a dummy, but I've just never been able to handle math or science with any real aptitude. For that, I'm hoping y'all can help out this hillbilly. I thank for any response you offer.