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Free-fall F26

(1, 0.8, 0.4)

From Li & Liao (2019)

Free-fall F26 (1, 0.8, 0.4) is a periodic orbit of the planar three-body problem: three masses in the ratio 1 : 0.8 : 0.4 that return to their starting positions and velocities every 4.0437 time units, published by Li & Liao (2019). Three bodies released from rest fall together, swing past each other and return to rest exactly where they started. It is unstable (largest Floquet multiplier 47692), so a small nudge makes it unravel over a few periods. The bodies pass within 0.0000026 of each other at a top speed of 641, line up 28 times a period, and the computed loop closes to 5.4×10⁻²¹.

Measured over one period

Period: 4.043651080
Masses: 1 : 0.8 : 0.4
Energy: -1.97420
Angular momentum: 0
Closest approach: 2.6×10⁻⁶
Top speed: 640.9
Path length: 12.444
Alignments per period: 28
Stability: unstable (|λ|max 47692)
Loop closure: 5.4×10⁻²¹

Neighbours on the map

All Free-fall orbits, the families of periodic three-body orbits, or the atlas map.