Fixed 1208 : Default settings give errors in ssa package

Hey everyone,

Thanks to the amazing work of dgondelach in this thread, I was able to quickly fix this issue.

PS: I tried to tweak some tests to fix #1153 (closed) as well but cannot be sure until someone test it on a Linux OS.

UPDATE : @Serrof, I find it weird that we find the same results as the ones from the CARA analysis tool when the tests are about very low relative velocity encounter ? Could you take a look ?

Cheers, Vincent