Jool Aerobraking Altitude

[Gojira]

Hey guys, I'm using NEAR and I need an aerobraking altitude that'll get me into a low Jool orbit. Any ideas would be very much appreciated, as I'm in the middle of a Jool mission and I need this stuff.

[Anquietas314]

I think it would really depend on how you entered Jool's atmosphere, what angle you were at, your rocket/ship/... design and so on.

[Gojira]

I think it would really depend on how you entered Jool's atmosphere, what angle you were at, your rocket/ship/... design and so on.

Ah, okay. It doesn't matter now, got into orbit without aerobraking. Thanks!

[thereaverofdarkness]

The best way to start is to put yourself about halfway into the atmosphere, this will at least generally get you locked into that planet's SOI. Then you can play with your periapsis at each apoapsis until you get the hang of what altitude to enter at. It gets easier with each mission.

[Janos1986]

Trajectories mod can help you with that.

It generates a white line which represents the orbit after you aerobrake at your actual periapsis.

So you only have to radial burn back or forth until you get a periapsis (and therefore an apoapsis) that you like.