60 degrees?

Dominic Ford

L4 and L5 are almost exactly 60 degrees away from the Sun [*], along the plane of the ecliptic, I think?

I say “almost” because as you point out, the Earth’s elliptical orbit will presumably perturb that angle slightly over the course of the year, though I imagine the perturbation is tiny.

[*] — My original forum post was incorrect, so I have edited the wording.