# Graph of spaceport latitude vs mars transfer orbit weight?

I am wondering how much do we lose when launching farther from Earth's equator in the context of reaching Mars? Strict metric might be latitude vs weight on mars transfer orbit for some generic rocket (like Falcon 9 or Soyuz-2 e.t.c) or something like that. I would appreciate any links to works on this topic.

I am curious about this because not many spaceports are really close to equator, and Russian ones are especially far from it...

• The answer to your question is in the launch manuals linked from our meta: meta.space.stackexchange.com/questions/249 , specifically $C_3$ vs mass graphs. You can compare MTO mass for a given $C_3$ value that comes from your desired launch/arrival dates (porkchop plot). Please also note that there are very few rockets that can be launched from multiple sites (Zenit-3SL and Soyuz are the exceptions). – Deer Hunter Sep 24 '15 at 18:18