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Free-fall F30

(1, 0.8, 0.6)

From Li & Liao (2019)

Free-fall F30 (1, 0.8, 0.6) is a periodic orbit of the planar three-body problem: three masses in the ratio 1 : 0.8 : 0.6 that return to their starting positions and velocities every 4.305 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 3316), so a small nudge makes it unravel over a few periods. The bodies pass within 0.000128 of each other at a top speed of 98.8, line up 28 times a period, and the computed loop closes to 1.2×10⁻²⁴.

Measured over one period

Period: 4.305036102
Masses: 1 : 0.8 : 0.6
Energy: -2.95242
Angular momentum: 0
Closest approach: 1.3×10⁻⁴
Top speed: 98.79
Path length: 14.238
Alignments per period: 28
Stability: unstable (|λ|max 3316)
Loop closure: 1.2×10⁻²⁴

Neighbours on the map

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