Atlas2,182 of 3,942

II.C.113

m₃ = 0.5

From Li & Liao (2017)

II.C.113 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 113.36 time units, published by Li & Liao (2017). The largest class in the atlas: hundreds of II.C orbits for seven mass ratios. It is unstable (largest Floquet multiplier 98.03), so a small nudge makes it unravel over a few periods. The bodies pass within 0.000125 of each other at a top speed of 104, line up 152 times a period, and the computed loop closes to 1.2×10⁻²³.

Measured over one period

Period: 113.3596459
Masses: 1 : 1 : 0.5
Energy: -1.01353
Angular momentum: 0
Closest approach: 1.2×10⁻⁴
Top speed: 103.5
Path length: 263.10
Alignments per period: 152
Topology: aabAbaBABabAbabABabABabABabABabABabABabABabABabABabABabABabABabABabABabABabABabABabAAbbABaaBAbbAABaBB (free-group class)
Stability: unstable (|λ|max 98.03)
Loop closure: 1.2×10⁻²³

Neighbours on the map

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