Atlas1,924 of 3,915

II.C.119

m₃ = 0.5

From Li & Liao (2017)

II.C.119 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 74.021 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 5.574), so a small nudge makes it unravel over a few periods. The bodies pass within 0.0000793 of each other at a top speed of 13, line up 158 times a period, and the computed loop closes to 6.1×10⁻²⁴.

Measured over one period

Period: 74.02094481
Masses: 1 : 1 : 0.5
Energy: -1.36594
Angular momentum: 0
Closest approach: 7.9×10⁻⁵
Top speed: 129.7
Path length: 189.11
Alignments per period: 158
Stability: weakly unstable (|λ|max 5.574)
Loop closure: 6.1×10⁻²⁴

Neighbours on the map

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