Moon's Orbit!?

As default we disable orbit line for Moon but you can enable it by hands: you need open ssystem.ini and add orbit_visualisation_period = 27.321582

Is it working? I added orbit_visualisation_period = 27.321582 property in ssystem.ini but couldn't see an orbit. other planet orbits shows fine.

Yes, it work, but I'm write parameter name with typo :( It should be orbit_visualization_period = 27.321582

it works fine now. thanks :)
orbit is shown only in if the moon is in view - is it a feature? is it possible to show the oribit even if the moon is not in the view?

Yes, this is feature - orbit show only for bodies in FOV.

Dear Alex,
Can we somehow modify stellarium to make the moon orbit visible even when the moon is not in FOV ?
Any fix for this problem ?
I am working with the nodes of moon. I need this feature badly.
Girish K Deshpande,
India

Thanks in advance.

Please look at Planet.cpp file (computePosition and drawOrbit methods)

Dear Alexander,
Please can you elaborate how to modify the file in the stellarium I am running on my pc. I have windows 8.1 lap. and have installed the latest stellarium on it. I know the Java language but I am stumbled at where to edit the code for the file.
Please help or give links where I can learn the whole process in detail.
Pleaaaaaaaaaaaaaaaaase Help.
Thanks in advance again.
Girish.

Dear Girish, it's easy and you should make 3 simple steps.

First step: you should get source code of Stellarium and prepare build environment (Tips: http://www.stellarium.org/wiki/index.php/Compile_with_MSYS_and_Qt5)

Second step: please open Planet.cpp file and comment or delete the lines 891-895 http://bazaar.launchpad.net/~stellarium/stellarium/trunk/view/head:/src/core/modules/Planet.cpp#L891

You should get code like this (quick and dirty solution):
/*
float viewport_left = prj->getViewportPosX();
float viewport_bottom = prj->getViewportPosY();
if (prj->project(Vec3d(0), screenPos)
    && screenPos[1]>viewport_bottom - screenSz && screenPos[1] < viewport_bottom + prj->getViewportHeight()+screenSz
    && screenPos[0]>viewport_left - screenSz && screenPos[0] < viewport_left + prj->getViewportWidth() + screenSz)
*/

Third step: you should re-build Stellarium from edited source code (look at tips from Step 1)