orbit_translate, a script for fetching and converting TLE to SSC

The home for finished/released addons.
Topic author
erikjber
Posts: 4
Joined: 01.06.2019
With us: 1 month 19 days

orbit_translate, a script for fetching and converting TLE to SSC

Post #1by erikjber » 01.06.2019, 18:11

The orbits of many of the earth satellites included in Celestia are out of date. Especially low-flying satellites like the ISS are frequently in need of update, as atmospheric drag, dockings, and course corrections perturb the orbits.

To automate this task, I've created a python script that downloads the latest TLE data from CelesTrak and converts it to SSC data. This data can be piped or copied into a file.
The script makes it easy to automate the task of updating the orbits, for example daily or each time Celestia is started.

The orbit_translate script is based on the Excel spreadsheet by Grant Hutchison.

Here is the script:
https://github.com/erikjber/orbit_translate

CAUTION:
This has not been thoroughly tested. I welcome bug reports and feature requests. If you find anything that is wrong or annoying, please let me know so that I can fix it.

Avatar
Lafuente_Astronomy
Moderator
Posts: 298
Joined: 04.08.2018
Age: 21
With us: 11 months 16 days
Location: Cebu, Philippines
Contact:

Post #2by Lafuente_Astronomy » 01.06.2019, 23:11

You can send a massage to the devs with regards to your contributions. I agree with you that the orbits need to be updated and improved. But I would suggest including the orbits of planets as well. I asked about that some time ago when I tried to see if a double transit of the Sun by Mercury and Venus which will happen in a really long time would be stimulated there. It didn't happen, so it had something to do with the orbits.

The devs are pirogronian and onetwothree.
Official Administrator of the Celestia Discord Server.
Invite: https://discordapp.com/invite/WEWDcJh
If you don't have a Discord account, register here: https://discordapp.com/register
Have a blessed day.

Topic author
erikjber
Posts: 4
Joined: 01.06.2019
With us: 1 month 19 days

Post #3by erikjber » 02.06.2019, 07:54

You can send a massage to the devs with regards to your contributions

I don't want to bother the devs with a minor thing like this.

But I would suggest including the orbits of planets as well.

That's an interesting suggestion. I would need a reliable source of planetary ephemeris. I'm not sure if my understanding of orbital mechanics is up to snuff, so there would be an element of learning involved.

onetwothree
Developer
Posts: 231
Joined: 22.09.2018
With us: 9 months 28 days

Post #4by onetwothree » 02.06.2019, 20:20

Great!

erikjber, if you don't mind, we include it to our tools collection.

Topic author
erikjber
Posts: 4
Joined: 01.06.2019
With us: 1 month 19 days

Post #5by erikjber » 03.06.2019, 16:36

onetwothree wrote:if you don't mind, we include it to our tools collection.

I don't mind. In fact, I'm thrilled!


Return to “Add-on releases”

Who is online

Users browsing this forum: pirogronian And 1 guest