How do you land at specific coordinates?

[Elladril]

I haven't been able to find a reasonably efficient solution for landing at coordinates that are not near the equator. I'm interested in knowing if there's a mathematical way to calculate how to adjust your orbit (starting from say an equatorial circular orbit) in order to path over a specific coordinate and then land there.

For reference, I use mechjeb for informational purposes but not to aid in flying the ship in any manner. Thanks!

[EndlessWaves]

Adjust your trajectory when approaching the body (or launching from it) so you go into an orbit of appropriate inclination. Except in the unlikely even of a synchronous orbit (they tend to be a long way out) you'll pass over every bit of planet between the apoapsis and periapsis latitudes so it's just a case of waiting until your flight path crosses the landing spot.

Edited October 10, 2012 by EndlessWaves

[Elladril]

Ahhh ok.. that makes sense... yea I knew I could pass over the right latitude but I couldn't figure out how to get the longitude correct at the same time... all I have to do is wait.. thanks a lot

[RoboRay]

Yeah, that's the easiest (and most fuel-efficient) way... capture into an orbit that's inclined enough to take you over your non-equatorial destination. I normally try for something close to polar orbits to make sure I can land anywhere on the planet I choose.