Hey guys. After a long time of not being able to get interplanetary encounters beyond getting lucky, I just sent an orbiter to Duna. Through the initial burn, and an adjustment when I was about midway there, I was able to get it down to about 5,072,000 meters. Still, when I got there, I had to burn off almost 1km/s delta-v, and I wanted to know if there's a better way. Should the encounter be from as far a possible, meaning slower speed and therefore less delta-v to burn off? Or try to get it in-atmosphere for an aerobraking maneuver? If it's the latter, how? 5,072,000 was about as close as I could get it.