Closest Kerbol Approach with new heating mechanics

[Temporal Wolf]

I built a solar observatory with enough dV to get to a stable 150Mm circular orbit around Kerbol (~20kdV on Kerbin escape on a retrograde path with periapsis at 150Mm)... with the new heating mechanics, my craft part-by-part explodes in the 750-600Mm range (during 'simulations', warp makes it much worse). I'm now looking to retarget my observatory at a safe distance (seemingly 750Mm), but this means I'll probably have 15kdV to spare once it's circular... maybe I'll try to put it in a polar orbit >89 degrees at 750Mm.

Anyone have any experience with craft closer than that and surviving the new heating mechanics?

EDIT: So for 16 of the 20kdV I have I can put it directly into a 800Mm circular polar orbit. I'll probably do that. Might have to build another with radiators and the like and see how close I can dive it before it burns up.

Edited October 6, 2015 by Temporal Wolf

[Padishar]

Take a look at this challenge thread if you haven't found it already...

[Temporal Wolf]

Take a look at this challenge thread if you haven't found it already...

Ah, awesome. I hadn't seen that.