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Feb 14, 2023 at 20:04 comment added g_don Hi @AlfonsoGonzalez I resume this post after long time since now I have a basic knowledge of Python and I decided to learn Cosmographia and how to perform a space mission simulation (and so I want to perform the task I asked in my question). I performed some internet searches and I found a lot of material but the point is that I don't know where to start. Can you provide me a guideline for my purpose? I mean the stuffs to study in the right chronological order. Thank you in advance!
Dec 26, 2022 at 20:26 vote accept g_don
Feb 11, 2022 at 17:49 comment added Alfonso Gonzalez @Giuseppe The easiest thing to do would be just to copy and paste the initial state vector in the Python script itself.
Feb 11, 2022 at 15:30 comment added g_don Thanks @Alfonso Gonzales. Is there a way to import my asteroid state vector stored as matrix in a .txt file?
Feb 11, 2022 at 15:06 comment added Alfonso Gonzalez @Giuseppe This video shows how to propagate orbits in Python: youtu.be/TzX6bg3Kc0E
Feb 11, 2022 at 0:39 comment added g_don Hi @AlfonsoGonzalez thanks for your suggestion. It looks like a very intersting tool. Just as example and to make me familiar with the software, can you show me how to propagate an asteroid orbit? I'm interested in some asteroids that I've selected according some criteria on orbital parameters on NASA JPL SSD website: link. Can you show me for instance how to propagate (or import from website above) the orbit of asteroid 1991 VG, please?
Jan 31, 2022 at 14:55 comment added Alfonso Gonzalez @VScode_fanboy just updated it
Jan 31, 2022 at 3:33 comment added FriendlyFire If you made the video, please allow it to "view in other websites", like Stack Exchange. Otherwise it will produce a ugly error.
Jan 31, 2022 at 0:04 comment added Alfonso Gonzalez @uhoh I think thats a setting on the channel itself (its my work not my personal so I don't control it).
Jan 31, 2022 at 0:02 comment added Alfonso Gonzalez @uhoh Good points, I added some links to the answer (turns out its not CSV!). As far as interpolation of text data files, they don't mention which type they use. My guess would be Chebyshev but I don't know. I believe that as long as the ephemeris times are in ascending order it works. To be honest I haven't used that functionality (I've only ever used SPICE kernels) so I can't say for sure. Overall this program is powerful but takes longer to show how to use than 1 post. I've spent countless hours learning it at work so I feel comfortable with it now but certainly not at the beginning
Jan 30, 2022 at 23:59 history edited Alfonso Gonzalez CC BY-SA 4.0
added 753 characters in body
Jan 30, 2022 at 22:34 comment added uhoh +n! voting n-factorial as usual! Probably most people can not convert text files to proper SPICE SPK (.bsp extension) kernels without some help or guidance, so the .csv option seems a lot easier. Are there constraints? Can they be unevenly spaced in time? How does the program interpolate? Linear? Spline? NASA's favorite flavor of Chebyshev polynomial?
Jan 30, 2022 at 20:24 history answered Alfonso Gonzalez CC BY-SA 4.0