Timeline for What is a near rectilinear halo orbit?
Current License: CC BY-SA 3.0
17 events
| when toggle format | what | by | license | comment | |
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| Feb 23, 2022 at 19:59 | comment | added | uhoh | @Diane I've linked to your answer in this answer to Where is Artemis on this Earth-Moon three-body bifurcation plot? Where's the near-rectilinear halo orbit for example? | |
| Apr 21, 2021 at 10:32 | comment | added | Calmarius | My only question left: what does the "near" and "rectilinear" part of the name means. Also why is it called a "halo orbit" when it's certainly not orbiting around the Lagrange point. It appears to be a polar orbit around Moon instead which are precessing to face Earth always - in this regard it's more analogous to the sun-synchronous orbits. | |
| Jul 22, 2019 at 20:22 | comment | added | Digger | @Diane, I'm thinkin' that a good way to explain Gateway's orbit to my lay audiences is for them to imagine themselves on a ~27 day (fast) drive around the Earth, while staying in the Moon's orbital plane and keeping the Moon high in the sky and seemingly motionless (trajectory-wise). Said Gateway would then be seen to be following an elliptical path around the Moon, with the plane of said orbit remaining orthogonal to the viewer's line of sight to the Moon. Close enough? | |
| Aug 26, 2018 at 7:49 | comment | added | uhoh | ...and another! Can Lissajous orbits have stable/unstable manifolds? | |
| Jan 18, 2018 at 14:31 | comment | added | uhoh | Here's a new question! Did DSCOVR travel “along the stable manifold of it's future SE L1 Halo orbit” to get there? | |
| Dec 16, 2017 at 4:15 | vote | accept | uhoh | ||
| Dec 14, 2017 at 19:52 | history | edited | Diane | CC BY-SA 3.0 |
Added an image for illustration.
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| Dec 14, 2017 at 16:40 | comment | added | Diane | The unstable orbits are fun because those have stable and unstable manifolds: trajectories that let you approach/depart the orbit asymptotically. The NRHOs are either marginally stable or really close to it, and if the stable/unstable manifolds exist, they approach/depart too slowly to be of much use. | |
| Dec 14, 2017 at 16:40 | comment | added | Diane | Yes, these stability properties are based on a linear analysis. It looks at the eigenvalues of the monodromy matrix, which is the state transition matrix integrated for one revolution of the periodic orbit. If all of the eigenvalues of the matrix have a magnitude of 1, the orbit is considered marginally stable. If any of them are greater than 1, it's unstable. There's a more thorough explanation in each the two papers linked in the answer. | |
| Dec 14, 2017 at 14:52 | comment | added | Julio | Nice answer!. Are that particular "stability" properties of NRHOs related to some sort of almost-linear propagation of the states in that orbit or there is not a relation at all? | |
| Dec 14, 2017 at 14:19 | comment | added | Diane | Thanks for pointing that out, Nathan. I've sent the merge request. | |
| Dec 14, 2017 at 4:20 | comment | added | Nathan Tuggy | You may want to merge this account with your registered one so the reputation is pooled appropriately and you can freely edit all your posts. | |
| Dec 13, 2017 at 22:08 | comment | added | uhoh | I've added a screenshot of Figure 2b. You're welcome to remove it either by editing again or if you click the word "edited" to the left of your icon, you can select roll-back. | |
| Dec 13, 2017 at 22:05 | history | edited | uhoh | CC BY-SA 3.0 |
added 240 characters in body
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| Dec 13, 2017 at 22:00 | comment | added | uhoh | Thank you for the thorough answer! It will take a day or two for me to read through it carefully, this is really extremely helpful! Also, welcome to Space Exploration Stackexchange! | |
| Dec 13, 2017 at 20:38 | review | First posts | |||
| Dec 14, 2017 at 4:16 | |||||
| Dec 13, 2017 at 20:35 | history | answered | Diane | CC BY-SA 3.0 |