Atlas285 of 3,942

I.A.49

m₃ = 0.5

From Li, Jing & Liao (2018)

I.A.49 m₃ = 0.5 is a periodic orbit of the planar three-body problem: three masses in the ratio 1 : 1 : 0.5 that return to their starting positions and velocities every 79.908 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 0.0000295 of each other at a top speed of 213, line up 130 times a period, and the computed loop closes to 2.7×10⁻¹⁶.

Measured over one period

Period: 79.90766279
Masses: 1 : 1 : 0.5
Energy: -1.12586
Angular momentum: 0
Closest approach: 3.0×10⁻⁵
Top speed: 212.5
Path length: 185.43
Alignments per period: 130
Topology: abaBAbaBAbabABabABabABAbaBAbaBAbabABabABabABAbaBAbaBABabABabABabaBAbaBAbaBABabABabAB (free-group class)
Stability: stable (|λ|max 1.000)
Loop closure: 2.7×10⁻¹⁶

Neighbours on the map

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