Atlas1,118 of 3,942

I.B.20

From Li & Liao (2017)

I.B.20 is a periodic orbit of the planar three-body problem: three equal masses that return to their starting positions and velocities every 54.861 time units, published by Li & Liao (2017). Class I.B orbits, for equal and unequal masses. It is linearly stable (largest Floquet multiplier 1.000), so a small nudge only makes it wobble. The bodies pass within 0.00159 of each other at a top speed of 25.1, line up 84 times a period, and the computed loop closes to 3.4×10⁻²⁵.

Measured over one period

Period: 54.86068200
Masses: 1 : 1 : 1
Energy: -1.71927
Angular momentum: 0
Closest approach: 0.001593
Top speed: 25.06
Path length: 145.74
Alignments per period: 84
Topology: ababABAbabABAbabABAbabABAbabaBABabaBABabaBABabaBAB (free-group class)
Stability: stable (|λ|max 1.000, published)
Loop closure: 3.4×10⁻²⁵

Neighbours on the map

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