We now know of several nearby systems around red dwarfs. None are habitable - but maybe we can put space-stations over there. Let's consider L1 and L2. I've proposed Venus L2 already; today we're on to the neighbour system.
For Hill spheres: orbitsimulator still exists with warning that it's not really SSL-secure yet. Or, vcalc.
On to Prox, 0.1221 Solar mass. Hill sphere: 149.8/Math.Pow(sini,1/3) megameters. sini=1 when i is edge-on so transiting... which its known planet b is not. Hill from "M2"'s 1.12 Earth mass is 152 megameters.
On assumption that this b planet is tidally-locked, which given its low eccentricity is certain, L1 and L2 serve as the planet's GEO. For reference, our GEO is 42.164 Mm semimajor. L1/L2 are halo-orbits, not towers.
If d turns out real, 0.3 Earth mass means Hill distance 58.2593 Mm. NB: here we are losing constraints, of which eccentricity is relevant.
No comments:
Post a Comment