Then open the script window by hitting the F12 key. Loading and running the script in Stellariumįirst launch Stellarium.

Repeat for the SEMB-L2 position by obtaining the position again from NASA Horizons and editing the SEMB_L2 array in the script. For each date of interest, edit the JWST array in the script following the example in the script. Then scroll down and you'll see the generated ephemeris with the Right Ascension (RA) and Declination (Dec) for each requested date and time. Enter your location and the date range of interest and click the 'Generate Ephemeris' button. Then set Ephemeris Type to 'Observer Table', the Target Body to JWST. NASA publishes the coordinates of the JWST and SEMB-L2 on their Horizons System website at. Modifying the script with the latest coordinates from the NASA Horizons service Loading and running the script in Stellarium.Modifying the script with the latest coordinates from the NASA Horizons service.Then there are two distinct steps to running the script to display the JWST and Sun-Earth-Moon-Barycenter L2 ĭownload the script to your local computer and rememebr where you've saved it. This assumes you have the free open source Stellarium planetarium software installed.

This is a Stellarium script to plot the position of the James Webb Space Telescope (JWST) and the Sun-Earth-Moon-Barycenter L2 Lagrange (SEMB-L2) point using coordinates from the Nasa Horizons service.

Nasa stellarium free app