I am researching for a sci-fi story that will happen in 2136.
There will be a lot of traveling in the Inner Solar System and I need to know the relative distances between two objects. Also, I would like to know specific positions of "smaller" celestial bodies in our Solar System. An example can be the dwarf planet Ceres and other big rocks in the Main Asteroid Belt.
If possible, I would like the tool to be open-source.
I am looking for a tool like NASA's Eyes. That tool can give a detailed and global views on the Solar System. It shows the orbits of different bodies. In addition, it lets me play with time and distance. And most importantly, it can give me the distance between two bodies (https://eyes.nasa.gov/).
The main problem with NASA's app is that it only let me travel until 2050 :/
PS: I've asked this question in the Astronomy StackExchange. Probably the Worldbuilding one is a better place because I've seen similar questions over here.