| k | Equilibrium points | Eigenvalues | Stabilities |
| 3.6 | : (0, 0, 0) | 1.0528 ± j0.4807, –3.1057 | Index-2 USF | : (0, ±2.4074, 0) | 1.3656, –1.1828 ± j1.7041 | Index-1 USF | : (±1.7659, ±1.7668, ±1.7659) | 0.1205 ± j1.9193, –1.2410 | Index-2 USF | : (±1.7659, ±0.7858, ±1.7659) | 1.3103, –1.1551 ± j1.3587 | Index-1 USF | : (±1.7659, ±2.8378, ±1.7659) | 0.3285 ± j2.6672, –1.6569 | Index-2 USF |
| 5 | : (0, 0, 0) | 1.4346 ± j1.0215, –3.8692 | Index-2 USF | : (0, ±2.5976, 0) | 2.0719, –1.5359 ± j2.2986 | Index-1 USF | : (±2.1253, ±2.1271, ±2.1253) | 0.4429 ± j2.9575, –1.8857 | Index-2 USF | : (±2.1253, ±0.5756, ±2.1253) | 2.1115, –1.5558 ± j2.1419 | Index-1 USF | : (±2.1253, ±2.9680, ±2.1253) | 0.6154 ± j3.4532, –2.2309 | Index-2 USF |
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