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ICESAT-2 The POD team developed the ICESat-2 orbit with the initial requirements of: (1) a 92┬░inclination orbit for coverage of polar ice and sea ice while still producing orbit-crossings for altimeter cross-over observations, (2) a frozen orbit to limit altitude variation at any given latitude in order to maintain beam pattern geometry on the surface, (3) ...


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Please be aware of different uses of the phrase "space tug" I've noticed in literature and at conferences. Meaning A is a vehicle resident in space capable of i) rendezvous and docking, ii) manoeuvering and iii) releasing a client. Meaning B is just items ii) and iii) and thus can include spacecraft considered by some to be "just" an upper stage, e.g. ...


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You might want to check out this MSc research published in 2017: "Feasibility of Reusable Continuous Thrust Spacecraft for Cargo Resupply Missions to Mars." The author's hypothesis was that currently low-thrust engines could be used to for space tugs between the Earth and Mars to send dozens of tons to Mars and return 10 tons back to Earth (if I recall the ...


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For Python and TLE propagation using SGP4 one very handy option is https://rhodesmill.org/skyfield/ As you probably already know a TLE is a strange animal. It does not really contain proper orbital elements, but instead is engineered with one purpose; to be fed into SGP4 so that that will generate reasonable position information for at least a few days ...


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