Research Article
Continuous-Thrust Station-Keeping of Cis-Lunar Orbits Using Optimal Sliding Mode Control with Practical Constraints
Table 2
The characteristics of the refined nominal orbits in the Moon-centered J2000 frame.
| | Orbit | Epoch | (km) | (km) | (km) | (km/s) | (km/s) | (km/s) |
| | 2 : 1 DRO | ‘2023 SEP 17 20 : 31 : 57.99’ | -68199.45 | -13688.95 | -4653.53 | -0.0742 | 0.2640 | 0.1449 | | 9 : 2 NRHO | ‘2023 SEP 17 11 : 58 : 53.09’ | -15118.12 | 33384.91 | -38118.07 | 0.0214 | -0.0879 | 0.2380 | | Halo (3) | ‘2023 SEP 17 12 : 34 : 13.28’ | -65241.84 | 35926.69 | -42963.88 | -0.0070 | -0.0233 | 0.1317 |
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