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Choreography NC.66

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

Choreography NC.66 is a periodic orbit of the planar three-body problem: three equal masses that return to their starting positions and velocities every 78.052 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 16021235946), so a small nudge makes it unravel over a few periods. The bodies pass within 0.00946 of each other at a top speed of 10.5, line up 120 times a period, and the computed loop closes to 5.5×10⁻²³.

Measured over one period

Period: 78.05180779
Masses: 1 : 1 : 1
Energy: -1.76964
Angular momentum: 0
Closest approach: 0.009457
Top speed: 10.49
Path length: 221.40
Alignments per period: 120
Topology: aaBAbaBAbaBAbaBABabABabABabAbaBAbaBAbaBAbaBabABabABabABAbaBAbaBAbaBAbbABabABabAB (free-group class)
Stability: unstable (|λ|max 1.6×10¹⁰, published)
Loop closure: 5.5×10⁻²³

Neighbours on the map

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