Hi,
I have released version 0.20-1 of sfsim.
sfsim now has an orbit display to make launching into an orbit easier. The orbit display shows a visualisation of the planet Earth and the orbit as well as several orbital parameters:
periapsis altitude
apoapsis altitude
current altitude
eccentricity
orbital period
time to periapsis
time to apoapsis
velocity
inclination
longitude of ascending node
Let me know any feedback and comments in the sfsim playtest discussion forum.
Enjoy!