It sounda similar to fiber latency. Ive never thought about this before but the amount of time for a round trip to a leo satellite, shouldnt that be in the range of 10 m/s. (1200 km / 300,000 km/ s) = 4 m/s x 2 i wonder whats the complete breakdown, is most of it inter satellite optical communication? Does this offset the additional 8 ms because its a simplified topology?
There is a huge difference in latency between existing satellite internet services and what spacex is looking to launch.
[0]: https://arstechnica.com/information-technology/2016/11/space...