Atlas623 of 3,915

I.A.31

m₃ = 0.5

From Li, Jing & Liao (2018)

I.A.31 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 77.765 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 weakly unstable (largest Floquet multiplier 1.215), so a small nudge makes it unravel over a few periods. The bodies pass within 0.00118 of each other at a top speed of 33.6, line up 98 times a period, and the computed loop closes to 8.1×10⁻²⁵.

Measured over one period

Period: 77.76537597
Masses: 1 : 1 : 0.5
Energy: -0.991608
Angular momentum: 0
Closest approach: 0.001179
Top speed: 33.61
Path length: 185.14
Alignments per period: 98
Stability: weakly unstable (|λ|max 1.215)
Loop closure: 8.1×10⁻²⁵

Neighbours on the map

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