Atlas478 of 3,942

I.A.131

m₃ = 0.5

From Li, Jing & Liao (2018)

I.A.131 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 149.51 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 1.001), so a small nudge only makes it wobble. The bodies pass within 0.00000798 of each other at a top speed of 409, line up 270 times a period, and the computed loop closes to 2.7×10⁻¹⁷.

Measured over one period

Period: 149.5147366
Masses: 1 : 1 : 0.5
Energy: -1.23117
Angular momentum: 0
Closest approach: 8.0×10⁻⁶
Top speed: 408.7
Path length: 374.21
Alignments per period: 270
Topology: aabAbaBAbaBAbaBAbaBAbaBAbaBAbaBAbaBBaabAbbAABaBAbabAbaBAbaBAbaBAbaBAbaBAbaBAbbAAbaBBaabAbbAABaBAbaBAbaBAbaBAbaBAbaBAbaBAbaBAbbAABaBBaabAbaBABaBAbaBAbaBAbaBAbaBAbaBAbaBBaaBAbbAABaBB (free-group class)
Stability: stable (|λ|max 1.001)
Loop closure: 2.7×10⁻¹⁷

Neighbours on the map

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