Yeah, I check new 8 TLE.
Nuri had 8 satellites, so we think these are Korean satellites, or with rocket body…
However, it is still difficult to distinguish between these satellites.
| Temporary NORAD ID | Satellite | NORAD ID to follow | Other NORAD IDs | Identified | Deployed | Last Update |
|---|---|---|---|---|---|---|
| RECEIVED AND DEMODULATED | ||||||
| 99159 | SNIPE D | 56743 | 56744-56746 | NO | YES | Received, NORAD ID to follow changed to 56743, other possible objects 56744-56746 |
| 99161 | SNIPE B | 56745 | 56743,56744,56746 | NO | YES | Received, NORAD ID to follow changed to 56745, other possible objects 56743, 56744 and 56746 |
| 99162 | SNIPE A | 56747 | 56748, 56749 | NO | YES | Received, NORAD ID to follow changed to 56747, other possible objects 56748, 56749 |
| NOT RECEIVED | ||||||
| 99160 | SNIPE C | 56746 | all | NO | YES | NORAD ID to follow randomly changed to 56746 |
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Very strong signals & all the 4k8 ax100 packets you could want from Snipe #2 over the Eastern U.S. 2349utc!
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I got information of one satellite launched together with KASI SNIPE.
LUMIR-T1 Information
Downlink Frequency: 437.475 MHz
AX.25 G3RUH 9600 bps
Beacon Interval: 1 min
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Hi @samuripual and welcome!
Thanks for the information, I’ve added an entry in DB with the temporary NORAD ID 99156.
@samuripual two question if you know.
- I’ve added the transmitter with FSK modulation, do you know if this is the modulation of the transmissions?
- Do you know if the frequency is coordinated with IARU?
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NORAD IDs are assigned in space-track.org, we have also a new entry for JLC-101-v1-2 and some identifications. Here is the status update:
| Temporary NORAD ID | Satellite | NORAD ID to follow | Other NORAD IDs | Identified | Deployed | Last Update |
|---|---|---|---|---|---|---|
| RECEIVED AND DEMODULATED | ||||||
| - | SNIPE D | 56744 | - | YES | YES | Identified, here are the ikhnos results |
| - | SNIPE B | 56745 | - | YES | YES | Identified, here are the ikhnos results |
| - | SNIPE A | 56749 | - | YES | YES | Identified, here are the ikhnos results |
| NOT RECEIVED | ||||||
| 99160 | SNIPE C | 56746 | all | NO | YES | NORAD ID to follow randomly changed to 56746 |
| 99160 | LUMIR-T1 | 56748 | all | NO | YES | NORAD ID to follow randomly changed to 56748 |
| 99160 | JLC-101-v1-2 | 56747 | all | NO | YES | NORAD ID to follow randomly changed to 56747 |
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@fredy , SNIPE A seems to correspond to ID 56746 instead of 56749 because the former gave us more successful communications. Would you please double-check this point?
According to these calculations with ikhnos based on observation 7620825 (verified also locally with other observations):
You can see with the red line in each image that shows the expected curve that the satellite signal should follow if each of the possible objects (TLE) were used. In more than one cases 56749 fits better than any other Object.
Also more recent observations like this one SatNOGS Network - Observation 7629445 shows that the doppler correction was correct by using 56749 TLE set (signal following a vertical straight line).
However if you have other calculations that prove that this identification isn’t right, please provide them in order to correct the DB entry.
@KASI please also provide/link to the necessary information to decode the satellite frames. Given that the satellite uses the radio amateur frequencies, info about decoding should have been public.
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There is a report about reception of SNIPE C in twitter https://twitter.com/agitgo33/status/1663145240528850944, @KASI can you confirm it?
Hi. it’s been a while. i wonder the photos you twitted last 25th of may.
You posted its data file on SATnorgs. However, I can’t find the data. What should i do to download data so i can parse it?
It is uploaded to the SatNOGS database and can be found at https://db.satnogs.org/api/telemetry/
“Satellite is reported to be transmitting at an uncoordinated or denied frequency.”
Because the satellites didn’t follow the IARU registration, it is possible this will not work. (More details on spectrum management)
Maybe @fredy can add some additional information and options.
Some more details can be found in Changes in Network and DB for satellites that violate frequency regulations.
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Changed JLC-101-v1-2 to follow 56748 and scheduled observations to verify this identification.
I’ve also changed LUMIR-T1 to follow 56747.
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