I've started trying to observe exoplanet transits. I use the scheduler at the excellent exoclock.space site to pick targets but needed an exoplanet catalog in kstars.
I created a kstars database using information from openexoplanetcatalogue.com. I've attached my database here in case its of use to anyone else.
Thank you, is there a REST service to query the planets? This could be added to KStars directly. We had supernovae data as well but unfortunately the online service was shutdown last year and now we are without an online supernovae source as well.
As well as Tomas' link I think there are another a couple of possibilities with published API info.
So I've been taking part in the Exoclock project. They have a really nice scheduler to help you pick which transits would be available from your location and with your equipment and they are building a database of verified observations.
You can access that database programtically and there are even python code snippets for doing that here www.exoclock.space/database/planets