Atlas3,096 of 3,942

Broucke region HS.722

From Hristov, Hristova & Tanikawa (2026)

Broucke region HS.722 is a periodic orbit of the planar three-body problem: three equal masses that return to their starting positions and velocities every 407.08 time units, published by Hristov, Hristova & Tanikawa (2026). Stable orbits related to Broucke’s isosceles orbit, with one body swinging through the other two. It is linearly stable (largest Floquet multiplier 1.000), so a small nudge only makes it wobble. The bodies pass within 0.0000584 of each other at a top speed of 131, line up 456 times a period, and the computed loop closes to 8.8×10⁻²³.

Measured over one period

Period: 407.0818853
Masses: 1 : 1 : 1
Energy: -1.43362
Angular momentum: 0
Closest approach: 5.8×10⁻⁵
Top speed: 130.8
Path length: 1042.1
Alignments per period: 456
Topology: aaBAbaBAbaBBabABabAAbaBAbaBAbbABabABaaBAbaBAbaBBabABabAAbaBAbaBAbbABabABaaBAbaBAbaBBabABabAAbaBAbaBAbbABabABaaBAbaBAbaBBabABabAAbaBAbaBAbbABabABaaBAbaBAbbABabABabAAbaBAbaBBabABabABaaBAbaBAbbABabABabAAbaBAbaBBabABabABaaBAbaBAbbABabABabAAbaBAbaBBabABabABaaBAbaBAbbABabABabAAbaBAbaBBabABabABaaBAbaBAbbABabAB (free-group class)
Stability: stable (|λ|max 1.000, published)
Loop closure: 8.8×10⁻²³

Neighbours on the map

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