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Apr 21 at 13:11 comment added PM 2Ring @KDP Yes, it's a bit unintuitive why maxima in the effective potential can be stable. This answer by Qmechanic has details on the role of the Coriolis force: physics.stackexchange.com/a/363801/123208
Apr 21 at 11:12 comment added KDP Looking at the diagram, the L4 and L5 points don't look particularly stable but fortunately someone in the comment mentions that the Coriolis force helps to stabilise them. Nice work though ;_)
Apr 21 at 11:04 comment added PM 2Ring @uhoh I also have a STEREO answer: space.stackexchange.com/a/56140/38535 ;)
Apr 21 at 11:01 comment added uhoh [+1] There's a cool GIF of how the STEREO pair economically got into orbits both slightly larger and smaller than 1 AU in Does the arrow in this STEREO trajectory animation point heliocentric prograde, or towards the Sun?.
Apr 21 at 11:00 vote accept KDP
Apr 21 at 10:04 history edited PM 2Ring CC BY-SA 4.0
Added link to Lagrange point diagram
Apr 21 at 9:58 history answered PM 2Ring CC BY-SA 4.0