2026-07-09 21:57 UTC. MARINA rx in 
.
Massive tx of data from the on-board GNSS Receiver (Non-AX.25 frames) to the ground station in Slovakia.
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It was an issue with the data entry combined with a known bug, now it is solved and I’ve made the necessary updates in DB and Network. Thanks for pointing this out!
And that’s just a small part of the entire orbit. So, here we go.
First, here are some interesting pictures showing the speed, altitude, and position on the map.
Now for the more useful part. I compared the recorded samples with the TLE sets provided by Space-Track.org. After the Doppler measurements indicated that object 88254 was the best candidate, we now have a second way to identify the correct TLE set for Marina.
As expected, the results are much more straightforward than the Doppler measurements. The graphs are shown below.
The large errors at the beginning were caused by a manual reboot during the pass over Europe and by the GNSS module downloading ephemeris data.
I compared the data with TLE sets from both this morning and yesterday morning, and both clearly point to object 88254.
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Good afternoon @crispywaffle42 ,
I have tried to decode the signals received in the network with the following gr-satellites Yaml file.
name: MARMOTSAT
norad: 98272
data:
&tlm Telemetry:
unknown
transmitters:
10k17 FSK downlink:
frequency: 436.125e+6
modulation: FSK
baudrate: 10170
framing: OpenLST
data:
- *tlm
But wasn’t successful, the gr-satellites OpenLST deframer is based on the framing used by the DORA satellite and I guess its different.
Any help and or information is appreciated.
Jan | PE0SAT
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A status update for all the satellites we track on this launch:
Bellow are the results running ikhnos on space-track.org analyst catalog for all the satellites we track on this launch:
| Satellite | Selected to follow | Other Possible | Status | Notes |
|---|---|---|---|---|
| Received and Decoded | ||||
| KOSTKA | 88272 | 88239, 88269, 88270, 88273 | Received | - |
| Marina | 88254 | 88209, 88217, 88219, 88220, 88221, 88223, 88225, 88229, 88238, 88253, 88255, 88256, 88257 | Received | - |
| KOYO | 88207 | 88244, 88246 | Received | - |
| SUCHAI-4 | 88245 | 88205 | Received | decoded by EU1SAT |
| Received | ||||
| MARMOTSat | 88247 | 88205, 88247 | Received | - |
| SCION-X | 88236 | 88205, 88208, 88207, 88237, 88240, 88241, 88244, 88245, 88246, 88247, 88248 | Received | Need more good observations for better fitting, still very faint signals |
| Unknown 1 T17 | 88214 | 88213, 88215, 88234, 88236, 88237 | Received | - |
| Unknown 2 T17 | 88237 | 88208, 88213, 88214, 88215, 88234, 88236, 88237, 88240, 88241, 88244, | Received | - |
| TOM-1 | 88245 | 88205, 88247, 88248 | Received | - |
| TOM-2 | 88247 | 88205, 88245, 88248 | Received | - |
| TOM-3 | 88248 | 88205, 88245, 88247 | Received | - |
| CloudCT-Precursor | 88234 | 88207, 88208, 88213, 88214, 88215, 88236, 88237, 88240, 88241, 88244, 88246, 88247 | Received | - |
| ANDURIL-216 | 88227 | 88212, 88218, 88222, 88224, 88228, 88230, 88231, 88242 | Received | - |
| RAFS | 88255 | 88209, 88217, 88223, 88225, 88229, 88253, 88254, 88256, 88257 | Received | - |
| Replicator-2 | 88261 | 88260, 88262 | Received | - |
| Kita-36 | 88226 | 88210, 88222, 88235, 88243, | Received | - |
| Kita-53 | 88227 | 88203, 88206, 88228, 88230 | Received | - |
| IPoS-TDsM | 88207 | all except 88203 | Received | No reception since the first day of deployment |
| CUBY-[1-5] | 88237 | 88208, 88213, 88214, 88215, 88234, 88236, 88237, 88240, 88241, 88244 | Probably Received | Assuming that transmit all of them at 435.6 MHz - Check the note below |
| FOSSASAT2E26 | - | - | Received | Reception from tinygs |
| Navigator | - | - | Received | Reception by K4KDR |
| Not Received | ||||
| Maveric | - | - | Not Received | - |
| Oasis Alpha | - | - | Not Received | - |
| Sentinel-1 (OSIRIS-A) | - | - | Not Received | - |
| CyberCube | - | - | Not Received | - |
| Centauri-9 | - | - | Not Received | unconfirmed transmitter |
| BRO-31 | - | - | Not Received | unconfirmed transmitter |
| ION SCV Joyful Julia | - | - | Not Received | unconfirmed transmitter |
The TLE changes with the temporary NORAD ID we use in SatNOGS DB:
KOSTKA
1 98395U 26190.88955240 +.00000267 +00000+0 +31530-4 0 00095
2 98395 97.7514 91.3078 0010746 134.2595 225.9507 14.92454518000388
Marina
1 98293U 26190.89043542 +.00000732 +00000+0 +77846-4 0 00082
2 98293 97.7542 91.3039 0008400 137.1520 223.0355 14.91932197000380
KOYO
1 98273U 26190.89230949 +.00001474 +00000+0 +15527-3 0 00125
2 98273 97.7533 91.3025 0004226 109.9013 250.2661 14.90835411000381
SUCHAI-4
1 98265U 26190.75832448 +.00000651 +00000+0 +72032-4 0 00102
2 98265 97.7556 91.1695 0003495 110.6088 249.5505 14.90678254000362
MARMOTSat
1 98272U 26190.89223897 +.00000932 +00000+0 +10014-3 0 00111
2 98272 97.7599 91.3017 0003907 124.8493 235.3093 14.90875414000386
SCION-X
1 98266U 26190.95916679 +.00000961 +00000+0 +10287-3 0 00101
2 98266 97.7510 91.3674 0005596 109.6302 250.5521 14.90983270000393
Unknown 1 T17
1 98259U 26190.75781200 +.00002310 +00000+0 +23923-3 0 00102
2 98259 97.7587 91.1715 0005091 115.7661 244.4083 14.90999660000361
Unknown 2 T17
1 98257U 26190.89207660 +.00000682 +00000+0 +74596-4 0 00101
2 98257 97.7593 91.3030 0004683 117.4065 242.7631 14.90970016000387
TOM-1
1 98264U 26190.75832448 +.00000651 +00000+0 +72032-4 0 00101
2 98264 97.7556 91.1695 0003495 110.6088 249.5505 14.90678254000361
TOM-2
1 98263U 26190.89223897 +.00000932 +00000+0 +10014-3 0 00111
2 98263 97.7599 91.3017 0003907 124.8493 235.3093 14.90875414000386
TOM-3
1 98262U 26190.89249514 +.00000633 +00000+0 +70094-4 0 00094
2 98262 97.7577 91.3023 0004399 103.2834 256.8875 14.90724985000386
CloudCT-Precursor
1 98278U 26190.95901677 +.00000336 +00000+0 +39489-4 0 00108
2 98278 97.7542 91.3677 0005999 113.1876 246.9975 14.91067135000393
ANDURIL-216
1 98258U 26190.95821928 +.00000932 +00000+0 +98597-4 0 00103
2 98258 97.7567 91.3701 0006718 128.9155 231.2664 14.91522907000395
RAFS
1 98268U 26190.95762149 +.00002069 +00000+0 +21018-3 0 00110
2 98268 97.7570 91.3712 0007789 138.4898 221.6914 14.91869834000395
Replicator-2
1 98267U 26190.89000082 +.00000771 +00000+0 +81206-4 0 00049
2 98267 97.7554 91.3046 0009146 142.9793 217.2059 14.92186608000213
Kita-36
1 98275U 26190.95850182 +.00003550 +00000+0 +36128-3 0 00117
2 98275 97.7559 91.3690 0006508 125.5806 234.6020 14.91364776000396
Kita-53
1 98274U 26190.95821928 +.00000932 +00000+0 +98597-4 0 00101
2 98274 97.7567 91.3701 0006718 128.9155 231.2664 14.91522907000393
IPoS-TDsM
1 98287U 26190.89230949 +.00001474 +00000+0 +15527-3 0 00120
2 98287 97.7533 91.3025 0004226 109.9013 250.2661 14.90835411000386
Cuby-5
1 98280U 26190.89207660 +.00000682 +00000+0 +74596-4 0 00107
2 98280 97.7593 91.3030 0004683 117.4065 242.7631 14.90970016000383
Cuby-4
1 98281U 26190.89207660 +.00000682 +00000+0 +74596-4 0 00108
2 98281 97.7593 91.3030 0004683 117.4065 242.7631 14.90970016000384
Cuby-3
1 98282U 26190.89207660 +.00000682 +00000+0 +74596-4 0 00109
2 98282 97.7593 91.3030 0004683 117.4065 242.7631 14.90970016000385
Cuby-2
1 98283U 26190.89207660 +.00000682 +00000+0 +74596-4 0 00100
2 98283 97.7593 91.3030 0004683 117.4065 242.7631 14.90970016000386
Cuby-1
1 98284U 26190.89207660 +.00000682 +00000+0 +74596-4 0 00101
2 98284 97.7593 91.3030 0004683 117.4065 242.7631 14.90970016000387
2 Likes
Thanks Vlad!
In case anyone is having difficulty decoding this one, the frames are six minutes apart! A high pass and some luck may be helpful.
Good hunting all!
Bob
N6RFM
3 Likes
Marina is in there twice ?
Jan | PE0SAT
Indeed… checking now what I miss.
I was missing MARMOTSat, I’ve updated the original post. Good catch!
2 Likes
Thanks for making this yaml i cant try it right now because im on vacation, also the signal from marmotsat is not very strong at least on my station so it might not be able to decode any frames.
1 Like
Good day all,
I hope someone from the MARMOTSAT team is also reading these posts.
After going back to ORCASAT and DORA that both also use OpenLST I tried to decode some audio files created by the SatNOGS network.
With the following gnuradio flow graph I have tried to decode the frames received but without succes.
My best guess at the moment is that the values used in the OpenLST Deframe+Decode block aren’t correct.
Any help or information is appreciated.
Jan | PE0SAT
4 Likes
Hi from the Apolink team!
The current TLE that we’re using is
1 88245U 26190.01994981 +.00000207 +00000+0 +26705-4 0 00089
2 88245 97.7557 90.4442 0003482 111.9994 248.1595 14.90676802000257
Hoping to see some good passes soon!
Thanks,
-The Apolink Team
Changed to use the temporary NORAD ID in DB:
IPoS-TDsM
1 98287U 26190.01994981 +.00000207 +00000+0 +26705-4 0 00086
2 98287 97.7557 90.4442 0003482 111.9994 248.1595 14.90676802000254
@N6RFM and or @K4KDR can try to record an IQ file when MARMOTSat is passing its groundstation in Canada ?
Thanks in advance,
Jan | PE0SAT
Sure will, Jan. But unfortunately, the best I’ll have is single-digit elevations so there’s little hope that I would be able to see anything.
Thanks Scott,
We will see if there is some SNR to test the decoders.
Jan | PE0SAT
TLE updates from the latest analyst list from space-track.org:
KOSTKA
1 98395U 26191.89522798 +.00001511 +00000+0 +15269-3 0 00111
2 98395 97.7514 92.2954 0011029 131.8372 228.3790 14.92458553000533
Marina
1 98293U 26191.89646072 +.00001138 +00000+0 +11795-3 0 00104
2 98293 97.7540 92.2937 0008506 133.6981 226.4944 14.91936597000530
KOYO
1 98273U 26191.96619446 +.00002538 +00000+0 +26328-3 0 00142
2 98273 97.7536 92.3574 0004572 106.4574 253.7147 14.90838878000547
SUCHAI-4
1 98265U 26192.10082203 +.00000577 +00000+0 +64410-4 0 00129
2 98265 97.7554 92.4881 0003543 107.5254 252.6351 14.90680512000561
MARMOTSat
1 98272U 26191.96609546 +.00000682 +00000+0 +74838-4 0 00138
2 98272 97.7598 92.3574 0003943 122.1725 237.9876 14.90877044000549
SCION-X
1 98266U 26192.10005783 +.00000342 +00000+0 +40168-4 0 00111
2 98266 97.7508 92.4879 0005652 106.8324 253.3514 14.90983703000568
Unknown 1 T17
1 98259U 26191.89869154 +.00001428 +00000+0 +14999-3 0 00127
2 98259 97.7584 92.2928 0005015 112.9177 247.2571 14.91000415000537
Unknown 2 T17
1 98257U 26192.10008977 +.00000204 +00000+0 +26207-4 0 00125
2 98257 97.7591 92.4908 0004727 113.9821 246.1892 14.90970333000560
TOM-1
1 98264U 26192.10082203 +.00000577 +00000+0 +64410-4 0 00128
2 98264 97.7554 92.4881 0003543 107.5254 252.6351 14.90680512000560
TOM-2
1 98263U 26191.96609546 +.00000682 +00000+0 +74838-4 0 00138
2 98263 97.7598 92.3574 0003943 122.1725 237.9876 14.90877044000549
TOM-3
1 98262U 26192.10070553 +.00000500 +00000+0 +56514-4 0 00112
2 98262 97.7576 92.4893 0004422 100.1730 259.9987 14.90726610000565
CloudCT-Precursor
1 98278U 26192.09984350 +.00000220 +00000+0 +27788-4 0 00116
2 98278 97.7542 92.4888 0006066 110.3253 249.8618 14.91067972000567
ANDURIL-216
1 98258U 26192.09869706 +.00000372 +00000+0 +42688-4 0 00126
2 98258 97.7568 92.4923 0006907 125.7891 234.3970 14.91524429000560
RAFS
1 98268U 26191.96369221 +.00001327 +00000+0 +13679-3 0 00138
2 98268 97.7569 92.3615 0007829 135.5979 224.5869 14.91872142000543
Replicator-2
1 98267U 26191.96291549 +.00000427 +00000+0 +47439-4 0 00068
2 98267 97.7553 92.3611 0009271 139.7223 220.4684 14.92187549000374
Kita-36
1 98275U 26192.09910041 +.00000985 +00000+0 +10426-3 0 00140
2 98275 97.7557 92.4909 0006636 120.7905 239.3967 14.91365797000563
Kita-53
1 98274U 26192.09869706 +.00000372 +00000+0 +42688-4 0 00124
2 98274 97.7568 92.4923 0006907 125.7891 234.3970 14.91524429000568
IPoS-TDsM
1 98287U 26191.96619446 +.00002538 +00000+0 +26328-3 0 00147
2 98287 97.7536 92.3574 0004572 106.4574 253.7147 14.90838878000542
CUBY-1
1 98284U 26192.10008977 +.00000204 +00000+0 +26207-4 0 00125
2 98284 97.7591 92.4908 0004727 113.9821 246.1892 14.90970333000560
CUBY-2
1 98283U 26192.10008977 +.00000204 +00000+0 +26207-4 0 00124
2 98283 97.7591 92.4908 0004727 113.9821 246.1892 14.90970333000569
CUBY-3
1 98282U 26192.10008977 +.00000204 +00000+0 +26207-4 0 00123
2 98282 97.7591 92.4908 0004727 113.9821 246.1892 14.90970333000568
CUBY-4
1 98281U 26192.10008977 +.00000204 +00000+0 +26207-4 0 00122
2 98281 97.7591 92.4908 0004727 113.9821 246.1892 14.90970333000567
CUBY-5
1 98280U 26192.10008977 +.00000204 +00000+0 +26207-4 0 00121
2 98280 97.7591 92.4908 0004727 113.9821 246.1892 14.90970333000566
TLE to be used were chosen from the previous analysis results posted in Transporter-17 Rideshare: VSFB SLC-4E : 2026-07-07 07:10 UTC - #146 by fredy, if you notice any significant deviation of the signals in observations, let me know to re-run the analysis. Next scheduled ikhnos analysis on Monday 2026-07-11.
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Happy to try Jan. As Scott points out pretty low from Rhode Island. Will also try using helix in Texas. /b
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Hi from the Apolink Team!
For our new TLE we’ll be using this:
1 88244U 26192.90557717 +.00001578 +00000+0 +16554-3 0 00149
2 88244 97.7564 93.2805 0004584 112.0496 248.1210 14.90929427000686
Hoping to see some better passes soon
Best,
-The Apolink Team
1 Like