Atlas540 of 3,942

I.A.74

m₃ = 0.75

From Li, Jing & Liao (2018)

I.A.74 m₃ = 0.75 is a periodic orbit of the planar three-body problem: three masses in the ratio 1 : 1 : 0.75 that return to their starting positions and velocities every 136.79 time units, published by Li, Jing & Liao (2018). Class I.A orbits found with Liao’s clean numerical simulation method, for a third body of varying mass. It is linearly stable (largest Floquet multiplier 1.000), so a small nudge only makes it wobble. The bodies pass within 0.0000381 of each other at a top speed of 173, line up 206 times a period, and the computed loop closes to 6.3×10⁻²³.

Measured over one period

Period: 136.7945572
Masses: 1 : 1 : 0.75
Energy: -1.40915
Angular momentum: 0
Closest approach: 3.8×10⁻⁵
Top speed: 173.2
Path length: 344.12
Alignments per period: 206
Topology: abaBAbabABabaBAbabABabaBABabABAbaBABabABAbabABabaBAbabABabaBAbabABAbaBABabABAbaBABabABAbabABabaBAbabABabaBABabABAbaBABabABAbaBAB (free-group class)
Stability: stable (|λ|max 1.000)
Loop closure: 6.3×10⁻²³

Neighbours on the map

All I.A orbits, the families of periodic three-body orbits, or the atlas map.