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Choreography NC.71

From Hristov, Hristova, Puzynin, Puzynina, Sharipov & Tukhliev (2024)

Choreography NC.71 is a periodic orbit of the planar three-body problem: three equal masses that return to their starting positions and velocities every 79.848 time units, published by Hristov, Hristova, Puzynin, Puzynina, Sharipov & Tukhliev (2024). Choreographies whose knot is not a power of the figure-eight’s: three bodies on one closed curve with a topology of its own. Computed to 180 digits; all unstable. It is unstable (largest Floquet multiplier 15385400824), so a small nudge makes it unravel over a few periods. The bodies pass within 0.000702 of each other at a top speed of 38.2, line up 126 times a period, and the computed loop closes to 3.8×10⁻¹⁹.

Measured over one period

Period: 79.84767527
Masses: 1 : 1 : 1
Energy: -1.76421
Angular momentum: 0
Closest approach: 7.0×10⁻⁴
Top speed: 38.23
Path length: 209.65
Alignments per period: 126
Topology: 0 (free-group class)
Stability: unstable (|λ|max 1.5×10¹⁰, published)
Loop closure: 3.8×10⁻¹⁹

Neighbours on the map

All Nontrivial choreographies, the families of periodic three-body orbits, or the atlas map.