Are there any to-scale diagrams of the TRAPPIST-1 system? Recommended to cross-post from SpaceEx: https://space.stackexchange.com/questions/38397/are-there-any-to-scale-diagrams-of-the-trappist-1-system



I was recently told that the planets in TRAPPIST-1 are close enough together that you can see them from each other, as visible, discernible planets "hanging in the sky". i.e. much like the moon.

This assertion is compatible with this question: How many things are wrong in this &quot;artist view&quot; of the TRAPPIST-1 system?



I'm trying to understand the implications of the claim, and started by trying to find a to-scale astronomic diagram of some, or all, of the TRAPPIST-1 system, showing the star, the planets, their sizes and orbits, to scale.

Obviously such a diagram of the (Sol-Terra) Solar System would be completely useless - a few pixels in the centre, surrounded by a 8 other single-pixel-dots around the diagram.

But if the claim is true for TRAPPIST-1, then I would expect such a diagram to be actually "usable".

But I couldn't find such a diagram. Does one exist?
As BMF already pointed out, you won't really see any planets in such overview diagrams for TRAPPIST-1, either. At least not with more than a few pixels per planet.

As I did not find a good model online, I would recommend looking at "Games" like Universe Sandbox or SpaceEngine. For the latter, older versions are even free.

Then you can generate screenshots like these:


Inner 3 planets to scale in front of a white background:

The whole system with the habitable zone:

And a double eclipse from TRAPPIST-1d: