For the hyperlimits of stars:
http://infodump.thefifthimperium.com/en ... ngton/93/1
JeffEngel wrote:It's a matter of the stellar (or other body) mass. Wormholes also mess up hyper transits in an area between them and the primary.
Translations into or out of hyper may not be possible at certain high velocities. I do not have the details that way on the top of my head or with an easy reference though - surely someone else will.
Into is limited to .3C, per HotQ as CA-286 Fearless and Convoy are headed for Grayson. Downward translations cause a speed dump which I think takes it below the .3C limit pretty much no matter what, but after that it's a how fast are you going to try to cross the alpha wall vs. closeness to the hyper limit.
Echoes of Honor wrote: A ship which attempted to translate out of hyper inside a star's hyper limit couldn't. As long as it made the attempt within the outer twenty percent of the hyper limit, all that happened was that it couldn't get into n-space. If it made the attempt any further in than that, however, Bad Things happened. Someone had once described the result as using a pulse cannon to fire soft-boiled eggs at a stone wall to see if they would bounce. Lester Tourville rather doubted they would, and even if he was wrong, it was a proposition he had no desire at all to test firsthand.
That's why good astrogators always shave the margin close but not too close.