Going through some strf observations I found a signal on 401.072 between SITRO-AIS-32 and SITRO-AIS-33.
It is active when the SITRO flock is passing so I guess a stowaway.
Any information on this satellite is appreciated
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For the sats 98948, 98949, 98950, 98951 all have the same NORAD IDs to pick from currently.
Using the signal of 98948 STRF found the following candidates.
rms limit (kHz): 0.1
20237 0.076 kHz 401.350221 MHz
59066 0.055 kHz 401.350103 MHz
59067 0.056 kHz 401.350126 MHz
59068 0.065 kHz 401.350219 MHz
59071 0.068 kHz 401.350253 MHz
Identified 5 candidate(s), best fitting satellite is 59066.
The 4 IDs from this launch are the only candidates for the 4 satellites that are in their own grouping. This will help narrow down the search, but right now I think the TLEs of the two groups are soo close the following ID won’t matter for now as long as its one from the right grouping.
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After decoding the signal I found this is ZORKIY-2M 2 active on a second frequency.
-> Packet from 2k4 FSK downlink
Container:
header = Container:
addresses = ListContainer:
Container:
callsign = u'R2ANF' (total 5)
ssid = Container:
ch = False
ssid = 0
extension = False
Container:
callsign = u'S3806B' (total 6)
ssid = Container:
ch = False
ssid = 1
extension = True
control = 0x00
pid = 0xF0
info = b'FB\x03\x00\x01\x00\x19\x00\x11\x00\xffs#\x15)\x0e\x89\x13\xe1e\xf5\xd2\x00\x00`\t\x00\x00,\x000\x1f\x00' (total 33)
Mystery solved
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TLE sets from space-track.org are now assigned and we have the first identifications as we don’t expect more objects to be catalogued, here is the latest status update:
| Temporary NORAD ID | Satellite | NORAD ID to follow | Other NORAD IDs | Identified | Deployed | Last Update | Notes |
|---|---|---|---|---|---|---|---|
| RECEIVED | |||||||
| - | METEOR M2-4 | 59051 | - | YES | YES | Reiceived, Identified | Identified from space-track.org, verified also by Network observations |
| - | PARS 1 | 59065 | - | YES | YES | Identified, here are the ikhnos results | |
| 98952 | ZORKIY-2M 2 | 59064 | - | NO | YES | Changed to follow 59064 | Received on both 401.0275 MHz and 401.0725, needs a couple more observations for identification |
| 98951 | SITRO-AIS-25 | 59067 | 59066 | NO | YES | Received, changed to follow 59067, other possible: 59066 | |
| 98950 | SITRO-AIS-26 | 59066 | 59067(unlikely) | NO | YES | Received, changed to follow 59066, other possible: 59067(unlikely) | |
| 98949 | SITRO-AIS-27 | 59068 | 59071(unlikely) | NO | YES | Received, changed to follow 59068, other possible: 59071(unlikely) | |
| 98948 | SITRO-AIS-28 | 59071 | 59068(unlikely) | NO | YES | Received, changed to follow 59071, other possible: 59068(unlikely) | |
| 98947 | SITRO-AIS-29 | 59052 | 59053 | NO | YES | Received, changed to follow 59052, other possible: 59053 | |
| 98946 | SITRO-AIS-30 | 59053 | 59052 | NO | YES | Received, changed to follow 59053, other possible: 59052 | |
| - | SITRO-AIS-31 | 59054 | - | YES | YES | Identified, here are the ikhnos results | |
| 98944 | SITRO-AIS-32 | 59056 | 59055(unlikely), 59057 | NO | YES | Received, changed to follow 59056, other possible: 59055(unlikely), 59057 | |
| 98943 | SITRO-AIS-33 | 59057 | 59055(unlikely), 59056 | NO | YES | Received, changed to follow 59057, other possible: 59055(unlikely), 59056 | |
| 98942 | SITRO-AIS-34 | 59055 | 59056, 59057 | NO | YES | Received, changed to follow 59055, other possible: 59056, 59057 | |
| 98941 | SITRO-AIS-35 | 59058 | 59057(unlikely) | NO | YES | Received, changed to follow 59058, other possible: 59057(unlikely) | |
| 98940 | SITRO-AIS-36 | 59059 | 59060 | NO | YES | Received, changed to follow 59059, other possible: 59060, removed 59061 | |
| 98939 | SITRO-AIS-49 | 59060 | 59059(unlikely), 59061 | NO | YES | Received, changed to follow 59060, other possible: 59059(unlikely), 59061 | |
| 98938 | SITRO-AIS-50 | 59061 | 59059(unlikely), 59060, 59062(unlikely) | NO | YES | Received, changed to follow 59061, other possible: 59059(unlikely), 59060, 59062(unlikely) | |
| 98937 | SITRO-AIS-51 | 59062 | 59061(unlikely) | NO | YES | Received, changed to follow 59062, other possible: 59061(unlikely) | |
| - | SITRO-AIS-52 | 59063 | - | YES | YES | Identified, here are the ikhnos results |
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Latest status update:
| Temporary NORAD ID | Satellite | NORAD ID to follow | Other NORAD IDs | Identified | Deployed | Last Update | Notes |
|---|---|---|---|---|---|---|---|
| RECEIVED | |||||||
| - | METEOR M2-4 | 59051 | - | YES | YES | Reiceived, Identified | Identified from space-track.org, verified also by Network observations |
| - | PARS 1 | 59065 | - | YES | YES | Identified, here are the ikhnos results | |
| - | ZORKIY-2M 2 | 59064 | - | YES | YES | Identified, here are the ikhnos results | |
| 98951 | SITRO-AIS-25 | 59066 | 59067(unlikely) | NO | YES | Received, changed to follow 59066, other possible: 59067 | |
| 98950 | SITRO-AIS-26 | 59067 | 59066(unlikely) | NO | YES | Received, changed to follow 59067, other possible: 59066(unlikely) | |
| - | SITRO-AIS-27 | 59068 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-28 | 59071 | - | YES | YES | Identified, here are the ikhnos results | |
| 98947 | SITRO-AIS-29 | 59052 | 59053 | NO | YES | None | |
| 98946 | SITRO-AIS-30 | 59053 | 59052 | NO | YES | None | |
| - | SITRO-AIS-31 | 59054 | - | YES | YES | Identified, here are the ikhnos results | |
| 98944 | SITRO-AIS-32 | 59057 | 59056 | NO | YES | Received, changed to follow 59057, other possible: 59056, removed 59055 | |
| 98943 | SITRO-AIS-33 | 59055 | 59056(unlikely), 59057(unlikely) | NO | YES | Received, changed to follow 59055, other possible: 59056(unlikely), 59057(unlikely) | |
| 98942 | SITRO-AIS-34 | 59056 | 59057 | NO | YES | Received, changed to follow 59056, other possible: 59057, removed 59055 | |
| - | SITRO-AIS-35 | - | YES | ||||
| - | SITRO-AIS-36 | 59059 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-49 | 59060 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-50 | 59061 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-51 | 59062 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-52 | 59063 | - | YES | YES | Identified, here are the ikhnos results |
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Latest status update:
There was a mis-identification in the previous post. This was due to a non-updated TLE set, that gave me wrong fits with ikhnos.
The issue was about OBJECT 59058 that in the previous post was identified as “SITRO-AIS-35” but actually is “SITRO-AIS-34”. OBJECT 59056 is “SITRO-AIS-35”.
In the image below is visible that on 2024-03-04 a change happened in the TLE for OBJECT 59058, updating its orbit parameters, also it is visible how close is with OBJECT 59056:
The necessary fixes are now added in DB and Network.
| Temporary NORAD ID | Satellite | NORAD ID to follow | Other NORAD IDs | Identified | Deployed | Last Update | Notes |
|---|---|---|---|---|---|---|---|
| RECEIVED | |||||||
| - | METEOR M2-4 | 59051 | - | YES | YES | Reiceived, Identified | Identified from space-track.org, verified also by Network observations |
| - | PARS 1 | 59065 | - | YES | YES | Identified, here are the ikhnos results | |
| - | ZORKIY-2M 2 | 59064 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-25 | 59066 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-26 | 59067 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-27 | 59068 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-28 | 59071 | - | YES | YES | Identified, here are the ikhnos results | |
| 98947 | SITRO-AIS-29 | 59052 | 59053 | NO | YES | None | |
| 98946 | SITRO-AIS-30 | 59053 | 59052 | NO | YES | None | |
| - | SITRO-AIS-31 | 59054 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-32 | 59057 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-33 | 59055 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-34 | 59058 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-35 | 59056 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-36 | 59059 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-49 | 59060 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-50 | 59061 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-51 | 59062 | - | YES | YES | Identified, here are the ikhnos results | |
| - | SITRO-AIS-52 | 59063 | - | YES | YES | Identified, here are the ikhnos results |
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