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Tevek2 are missing

Open petrkr opened this issue 6 months ago • 6 comments

Add this data sourcec which contains also new Tevel2 satellites

http://www.amsat.org/amsat/ftp/keps/current/nasabare.txt

I added it manually by file, but on next online update they disappear

petrkr avatar Jun 01 '25 11:06 petrkr

Hey there! Sorry for a late response.

The app already includes the nasabare.txt TLEs from AMSAT as can be seen here. If you've updated the data but still can't see the needed satellite in the list - either try to search by NORAD CatId (some data providers have their own names for certain satellites), or try clearing your categories/modes filters. The app shouldn't clear the existing satellites on update, so I have a feeling it has something to do with the different naming conventions among AMSAT and Celestrak. Hope that helps.

rt-bishop avatar Jun 07 '25 15:06 rt-bishop

Do not know... If I will check that txt file, its name is right TEVEL2-x

petrkr@archlinux /t/a> grep -i tevel nasabare.txt
TEVEL2-4
TEVEL2-5
TEVEL2-6
TEVEL2-1
TEVEL2-2
TEVEL2-3
TEVEL2-8
TEVEL2-9
TEVEL2-7

if I will try to find it by other name (like callsign or something) it is also not there.

But strange is, if I will download this .txt file on phone and update it by using "File" option instead "Online", then they appears.

I also tried clear the database. I have version 3.1.4 if that is latest

Also strange thing is. If I will use online, I will get 12060 satellites, if I will after it use File update, only two more satellites appear (12062), but all tevels (like 9 of them) are visible since that.

petrkr avatar Jun 09 '25 15:06 petrkr

Interesting... Thanks so much for this additional info, that's super helpful! Tomorrow I should have time to investigate this issue. I'll have a look at what's going on and get back to you.

rt-bishop avatar Jun 10 '25 08:06 rt-bishop

I've got some info for you. After spending some time verifying the app's parsing and different format handling, I found that issue is not in the code. Basically Celestrak has priority over other data sources as ~90% of the data comes from it. All other data sources like AMSAT, R4UAB, McCants get overwritten by Celestrak. And those datasources decided to have different naming conventions for the same NORAD satellite CatID. So basically TEVEL2-4 that you're looking for in Celestrak's terms is called 2025-052D. You can easily verify that by searching for 63213 CatId in Look4Sat. The satellite is indeed found and is trackable, but not under the name you're looking for.

This issue is not easily resolvable on the app's side. What I can do is to hardcode the priority for other sources over the Celestrak, so they will be adding to it and overwriting all the names. The possible outcome is that users that prefer Celestrak will be pissed off and open similar issues. I'm fine with taking this risk as this project is not for profit anyway and I work on it only when I get some free time (super rarely lately). However if more users are pissed off with this change I may revert it. The next release is planned roughly in a month (no guarantees), also in the meantime you could just search for your satellites using the NORAD CatId (CatNum, unique ID).

Hope that info helps.

rt-bishop avatar Jun 11 '25 17:06 rt-bishop

Thanks for review, there is problem with names that I really do not know where I have to find such names, like how to know tevel-2 is some magic number. I tried search some callsign, but problem of gooogle and tevel2-x sats is whenever you will google tevel2-2 you will get hundreds informations about 2 years old tevel-2 as AI at google thing you did typo.

Do understand this issue, do not know what is better.

Best of thay would be aliases, but that is something what is not doable in free time.

I also have some projects which i do at freetime, so i understand u.

petrkr avatar Jun 11 '25 18:06 petrkr

This is a screenshot from the upcoming branch with IDs of the satellites highlighted (they should be present in LIVE as well). You can use those to find the satellites you're looking for in the meantime. This is how they are called according to Celestrak. I'm not sure what are the reasons for those naming conventions apart from politics. I'm sure there are fans of both in the world =)

rt-bishop avatar Jun 11 '25 19:06 rt-bishop

Image Recently, the FM transponder of TEVEL2-3 (63219 25052K) has resumed operation, but after adding it through Catid in Look4Sat, no corresponding transponder data was found. After investigation, it was discovered that TEVEL2-2 (63218 25052J) has experienced the same issue.

GalaxyEmpire avatar Jul 07 '25 15:07 GalaxyEmpire

I'd suggest clearing the app's storage and cache via Long click - App info. And then to do a satellite data update. These steps have solved it for users with similar issue.

rt-bishop avatar Jul 26 '25 16:07 rt-bishop