Linked Questions
22 questions linked to/from Why is a near rectilinear halo orbit proposed for LOP-G (formerly known as Deep Space Gateway?)
19
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What artificial satellite has the farthest orbit around the Earth?
What is the furthest Earth orbiting satellite?
What is its speed and purpose?
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What is a near rectilinear halo orbit?
A proposed option for the lunar orbit of a Lunar Orbital Platform-Gateway (formerly known as Deep Space Gateway) is a near rectilinear halo orbit, or NRHO.
This excellent answer discusses the ...
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What is the current state of commercial space stations?
Many years ago, in the 2005 - 2010 area, it seemed like there were a lot of proposals to create commercial space habitats. These included inflatable modules, usage of spent fuel tanks, and ...
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How does a butterfly orbit move in 3D? Way to generate or visualize?
The paper Earth-Moon Near Rectilinear Halo and Butterfly Orbits for Lunar Surface Exploration (AAS 18-406) says
Periodic Orbits in the Earth-Moon System
The current investigation focuses on three ...
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7
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2
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Do Lagrangian points apply to eccentric orbits or binary systems?
The assumptions about the Lagrangian points being stable (...in the traditional meaning of the word: not moving around; they are unstable in the mathematical sense, except for arguably L4, L5) that I'...
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6
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Is the Gateway's halo orbit bound to Earth? Would the Gateway remain in Earth orbit if the Moon disappeared?
Discussion below this answer involves my feeling that calling halo orbits in very asymmetric systems (e.g. Sun-Earth or Earth-Moon) as orbits around the primary, in 1:1 resonance with the secondary.
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6
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Aspects of "true deep space environment" on Gateway not thoroughly explored by decades of habitation of nine space stations already?
The ABC News article President Trump prompts state of confusion over space policy with tweet covers POTUS' tweet and NASA director Bridenstine's clarification tweet a few hours later, as well as cites ...
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5
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LOPG/Deep Space Gateway - What is a cislunar orbit?
Formerly the Deep Space Gateway and now the Lunar Orbital Gateway or LOPG station, is planned for Expedition 1 aka the maiden launch of the SLS. After reading several specifications, to avoid the "...
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How do I calculate the characteristic energy for a rocket to near rectilinear halo orbit where the Deep Space Gateway is going to orbit the Moon?
How do I calculate the characteristic energy for a rocket to near rectilinear halo orbit (NRHO) where the LOP-G or the Deep Space Gateway is going to be orbiting the Moon? Or if someone already has a ...
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2
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Can mascons have Lagrange-like points? In principle? At the Moon?
Background
Lagrange points are a mathematical consequence of the The Circular Restricted Three Body Problem (CR3BP or CRTBP); two massive bodies orbiting around their center of mass and a third ...
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4
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1
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How much delta-v does it take to get from a Lunar Transfer Orbit to a Near Rectilinear Halo Orbit around the moon
There has been a lot of talk of NASA putting a Lunar Gateway in a Near Rectilinear Halo orbit around the moon, but I don't actually know how much delta-v it takes to get there.
Most delta-v maps I can ...
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How will the Lunar Gateway go to L2 and L1; how much delta-v is needed?
In a talk to the press which can be heard in the YouTube video NASA Administrator Jim Bridenstine Explains the Lunar Gateway, NASA director Jim Bridenstine says after about ...
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4
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1
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Station-keeping delta-v per year for an Earth-Moon vanilla halo orbit?
This answer reminds us that an Earth-Moon L1 or L2 vanilla1 halo orbit remaining always visible to some patch on the Moon's surface requires station-keeping.
Queqiao uses such an orbit having ...
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3
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1
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Rendezvouses in halo or lissajous orbits
If a spacecraft was in an EM-L2 halo/lissajous orbit, and another craft would was going to approach EM-L2 a few days later, could they rendezvous immediately or is there a limitation when the second ...
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How to use "patch points" to make a continuous halo orbit?
update: I've found "patch points" mentioned throughout the following papers; it is likely that an answer can be found from these sources.
Targeting Cislunar Near Rectilinear Halo Orbits for Human ...
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