# How can I determine the fastest orbit altitude including time warp?

When using mods like SCANsat, I find I spend a lot of time having to wait for my spacecraft to complete a certain number of orbits in order to complete whatever task it is I launched it for. To minimize this time, I want to find out what altitude is best to orbit at, such that the orbit period divided by the maximum time warp multiplier results in the least amount of real-time spent per orbit.

I know there's plenty of charts online that provide the values for maximum time warp allowed at certain altitudes. What I need now is a reference or formula to get the orbital periods at those altitudes, so I can figure out which will have the least real-time orbit period.

Is there an easy way to do this, or is this one of the harder bits of rocket science that I'm going to have to learn some advanced maths for?

• The joy of ScanSAT is that you can fly other missions and let the scanner tick away, it doesn't have to be the active vessel, but if you want the quickest result then see SaintWacko's answer – CyanAngel Oct 6 '14 at 12:47

In order to calculate this I used the advice in this tutorial. I used the masses of Kerbin and the Mun from that thread, as they were pre-formatted in the proper manner*. I then entered into Wolfram Alpha orbital period <mass> <equatorial radius* + orbit altitude> e.g. orbital period 5.2915793*10^22 kg 840 km. This allowed me to find the orbital period at each minimum time warp altitude, and from there I was able to divide each orbital period by the max time warp at that altitude to find the real-time orbital period.