Okay, this makes it very clear, thank you! I will use this as soon as I have upgraded to the Horizon's, did not realize I needed that until now for Planet landings.
Cheers!
You're welcome. There's a couple of corrections to my previous post.
Firstly that 250mm should read 250km.
I've actually played a bit more and learned some since then. Once you're in orbital flight you want to approach the base at a 30-50 degree angle, so the greater your altitude above the planet, the sooner you should start your dive. To use my above example of 250km away from the base would be right assuming my altitude must be around 200-250km. If I have more altitude, I start my descent at a greater distance from the base. You angle of descent, altitude, and distance from target are all shown on your HUD.
Also shown on your HUD in the bottom right corner is the amount of gravity you're experiencing, expressed as a fraction of Earth normal gravity. For example at the surface on earth it would read 1.0G, whereas the moon as 1/16 Earth normal gravity so it would read 0.166G on the HUD if you landed on Luna. The greater the gravity, the more you're required to think ahead for pulling out of descents and so on. The use of "too much down" on a high G planet might result in your ship "not having enough up" to pull out of a dive, resulting in a sudden, catastrophic, and brief meeting of ship and planet.
Re updating... Horizons will ONLY allow you to approach/land on planets without an atmosphere. When they release landings on atmospheric planets you'll need another update again.