Atlas2,136 of 3,915

II.C.206

m₃ = 0.5

From Li & Liao (2017)

II.C.206 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 148.33 time units, published by Li & Liao (2017). The largest class in the atlas: hundreds of II.C orbits for seven mass ratios. It is weakly unstable (largest Floquet multiplier 1.652), so a small nudge makes it unravel over a few periods. The bodies pass within 0.0000194 of each other at a top speed of 262, line up 244 times a period, and the computed loop closes to 1.3×10⁻²².

Measured over one period

Period: 148.3342287
Masses: 1 : 1 : 0.5
Energy: -1.14501
Angular momentum: 0
Closest approach: 1.9×10⁻⁵
Top speed: 262.0
Path length: 353.65
Alignments per period: 244
Stability: weakly unstable (|λ|max 1.652)
Loop closure: 1.3×10⁻²²

Neighbours on the map

All II.C orbits, the families of periodic three-body orbits, or the atlas map.