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II.C.184

From Li & Liao (2017)

II.C.184 is a periodic orbit of the planar three-body problem: three equal masses that return to their starting positions and velocities every 189.59 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 1.371), so a small nudge makes it unravel over a few periods. The bodies pass within 0.0000303 of each other at a top speed of 182, line up 372 times a period, and the computed loop closes to 3.1×10⁻²³.

Measured over one period

Period: 189.5879551
Masses: 1 : 1 : 1
Energy: -2.01292
Angular momentum: 0
Closest approach: 3.0×10⁻⁵
Top speed: 181.7
Path length: 528.07
Alignments per period: 372
Topology: ababABAbabaBABababABAbabABABabaBABAbabABAbabaBABababABAbabABABabaBABAbabABABabaBABababABAbabaBABabaBABababABABabaBABababABAbabABABababABAbabABAbabaBABababABAbabABABabaBABAbabABABabaBABababABAbabaBABabaBABAbabABABabaBAB (free-group class)
Stability: weakly unstable (|λ|max 1.371)
Loop closure: 3.1×10⁻²³

Neighbours on the map

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