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Moth region HS.629

From Hristov, Hristova & Tanikawa (2026)

Moth region HS.629 is a periodic orbit of the planar three-body problem: three equal masses that return to their starting positions and velocities every 436.76 time units, published by Hristov, Hristova & Tanikawa (2026). Stable orbits from the moth-like part of the search domain, between the figure-eight and the Schubart regions. It is linearly stable (largest Floquet multiplier 1.000), so a small nudge only makes it wobble. The bodies pass within 0.00019 of each other at a top speed of 72.6, line up 430 times a period, and the computed loop closes to 3.6×10⁻²⁴.

Measured over one period

Period: 436.7619569
Masses: 1 : 1 : 1
Energy: -1.31247
Angular momentum: 0
Closest approach: 1.9×10⁻⁴
Top speed: 72.62
Path length: 1093.2
Alignments per period: 430
Topology: abaBAbaBAbabABabABabaBAbaBAbabABabABabaBAbaBAbabABabABAbaBAbaBABabABabABAbaBAbaBABabABabABAbaBAbabABabABabaBAbaBAbabABabABabaBAbaBAbabABabABAbaBAbaBABabABabABAbaBAbaBABabABabABAbaBAbaBABabABabaBAbaBAbabABabABabaBAbaBAbabABabABabaBAbaBABabABabABAbaBAbaBABabABabABAbaBAbaBABabAB (free-group class)
Stability: stable (|λ|max 1.000, published)
Loop closure: 3.6×10⁻²⁴

Neighbours on the map

All Moth region, the families of periodic three-body orbits, or the atlas map.