Atlas628 of 3,942

I.A.79

m₃ = 0.5

From Li, Jing & Liao (2018)

I.A.79 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 138.77 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 0.000157 of each other at a top speed of 92.1, line up 166 times a period, and the computed loop closes to 9.7×10⁻²⁴.

Measured over one period

Period: 138.7657170
Masses: 1 : 1 : 0.5
Energy: -0.961593
Angular momentum: 0
Closest approach: 1.6×10⁻⁴
Top speed: 92.12
Path length: 326.88
Alignments per period: 166
Topology: aaBAbaBAbabABabAAbaBAbabABabAAbaBAbabABabAAbaBAbabABabAAbaBAbaBABabABaaBAbaBABabABaaBAbaBABabABaaBAbaBABabAB (free-group class)
Stability: stable (|λ|max 1.000)
Loop closure: 9.7×10⁻²⁴

Neighbours on the map

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