SpaceX F9 Transporter-6 - 2023-01-03 14:56 UTC

kerel · January 19, 2023, 12:41pm

In Observation 7049342 we see that EPIC CHIMERA LEO 1, or whatever the object received in this observation is, is running early with respect to our TLE for EPIC CHIMERA LEO 1. Yesterday I created an updated TLE, see this post:

1 43835U          23014.20174576  .00000000  00000-0  64271-3 0    01
2 43835  97.4849  91.1717 0013590 170.1455 275.1811 15.14212796    06
# 20230118.44-20230118.44, 74 measurements, 0.026 kHz rms

Ikhnos confirms that this is a better match (although already a bit late now):

I suggest to use this TLE for EPIC CHIMERA LEO 1 until there is a better identification with a space-track object or an updated TLE from us, otherwise we risk loosing this object.

fredy · January 19, 2023, 2:36pm

@kerel have you checked the newer TLE sets posted above against this waterfall?

Also it sounds not a good idea to follow an object that doesn’t belong to this launch as it seems to be a coincidence that the TLE fit.

if you have evidence that the object 43835 follows the orbit of the objects of this launch then we can try it, however we have TLE for almost all the objects so probably it would be better to follow one of them even if it doesn’t fit 100%.

fredy · January 19, 2023, 9:01pm

Sharjahsat-1 now is set to follow 55032 as it seems to fit better after @PE0SAT analysis.

fredy · January 20, 2023, 10:39am

TLE sets are still 95, reminder that the total of the payloads were 114, from which initially to be deployed were 82 and from them only 78 were confirmed. Here are the latest updates:

Satellite Identifier	Satellite Name	NORAD ID to Follow	Other Possible NORAD IDs	Notes
DELH-6722-1461-1897-7938	Sharjahsat-1	55032	55033	Received and changed to follow OBJECT Z(51032), removed 55039, 55040, 55042, 55044
NJFB-9884-9643-7739-4519	BDSAT-2	55098	55103	Received, removed 55038, 55094, 55095
NJEX-6170-8600-1975-0468	ION SCV-007	55051	-	Received and for now only OBJECT AU(55051) fits
VPUU-7194-1121-2414-5647	ION SCV-008	55060	55014-55021(unlikely)	Received and changed to follow OBJECT BD(55060), removed 55033
RJCF-5779-9216-5641-4111	BRO-8	55011	-	Received and for now only OBJECT C(55011) fits
PDVW-9191-3063-9872-9368	Vigoride-5	55036	all the rest	No update
KCKF-9169-8304-1813-6974	Platform-2	55067	55080, 55082(unlikely), 55083	Received, removed 55077-55079, 55081
TVZK-1463-5590-8994-0377	Connecta T1.2	55012	-	Received and for now only OBJECT D(55012) fits
LSZR-8461-9828-5431-6212	Star Vibe	55009	all the rest	Not (recently) received, OBJECT A(55009) is chosen based on this tweet
JRGY-1674-7223-5551-1972	TAUSAT-2	55073	55071, 55072(unlikely)	Received and set to follow OBJECT BS(55073) fits

fredy · January 20, 2023, 10:49am

An update about Platform-2. We are not sure if the received signal belongs indeed to Platform-2 satellite or to something else. It needs further investigation and maybe some feedback from its team.

kerel · January 20, 2023, 12:51pm

No, I haven’t (no automation for this here yet and 95 is just too many for a side task).

Agreed! From this other thread I took for granted that the transmission / the object fitted by the TLE I posted is EPIC CHIMERA, but as we still did not get a confirmation from the satellite team that this is a transmission by their satellite this assumption is to be rejected.

PE0SAT · January 21, 2023, 12:32pm

TAUSAT-2 55073

37502 0.760 kHz 436.398865 MHz
47461 0.282 kHz 436.400418 MHz
47617 0.439 kHz 436.399469 MHz
48297 0.869 kHz 436.398574 MHz
49233 0.307 kHz 436.400105 MHz
52484 0.723 kHz 436.399483 MHz
53428 0.601 kHz 436.399132 MHz
55073 0.180 kHz 436.400091 MHz
55075 0.651 kHz 436.401064 MHz
Identified 9 candidate(s), best fitting satellite is 55073

fredy · January 22, 2023, 12:02pm

TLE sets are still 95, reminder that the total of the payloads were 114, from which initially to be deployed were 82 and from them only 78 were confirmed. Here are the latest updates:

Satellite Identifier	Satellite Name	NORAD ID to Follow	Other Possible NORAD IDs	Notes
DELH-6722-1461-1897-7938	Sharjahsat-1	51026	55022(unlikely), 55024, 55025(unlikely), 55027, 55029(unlikely)	Received and changed to follow OBJECT T(51026), removed 55032, 55033
NJFB-9884-9643-7739-4519	BDSAT-2	55098	55103(unlikely)	Received - no update
NJEX-6170-8600-1975-0468	ION SCV-008	55051	-	Received - no update*
VPUU-7194-1121-2414-5647	ION SCV-007	55060	-	Received and for now only 55060 fits, removed 55014-55021*
RJCF-5779-9216-5641-4111	BRO-8	55011	-	Received - no update
PDVW-9191-3063-9872-9368	Vigoride-5	55056	all the rest	Not (recently?) received, changed according to space-track.org
KCKF-9169-8304-1813-6974	Platform-2	55067	55080, 55082(unlikely), 55083	Not (recently?) received, not sure if the object we follow is the right until we confirm previous receptions were from the satellite
TVZK-1463-5590-8994-0377	Connecta T1.2	55012	-	Received - no update
LSZR-8461-9828-5431-6212	Star Vibe	55009	all the rest	Not (recently) received, OBJECT A(55009) is chosen based on this tweet
JRGY-1674-7223-5551-1972	TAUSAT-2	55073	55074(unlikely), 55075(unlikely)	Received, removed 55071, 55072

*According to space-track.org, it looks like that we thought that ION SCV-007 was ION SCV-008 and vice versa. So, I updated the names in DB and Network as well as in the table above.

EU1SAT · January 22, 2023, 5:58pm

https://twitter.com/EU1SAT/status/1617219598805245953

fredy · January 22, 2023, 6:19pm

Just to confirm… this was at the frequency we have in DB right?

EU1SAT · January 22, 2023, 6:24pm

Yes, frequency 437.025 MHz

EU1SAT · January 22, 2023, 7:38pm

https://twitter.com/EU1SAT/status/1617244437872054272

EU1SAT · January 23, 2023, 10:14am

SHARJAHSAT-1 Now looks like an object #55022 (OBJECT P)
https://twitter.com/EU1SAT/status/1617464303770304513

fredy · January 23, 2023, 11:21am

Indeed, I’ve re-checked one of our latest and it seems that this is the satellite as all the others don’t fit very well. So, I’ve changed in DB and Network, however let’s wait some more days before any final identification.

Here is the checked observation with ikhnos that show the 55022 fit:

EDIT: interesting that this object has been identified in space-track celestrak(in space-track is still unidentified) as one of the LEMURs, let’s see if it was a mis-identification or not.

Also we expect soon the team to increase the rate of the transmitted signals, this will make the identification easier.

fredy · January 23, 2023, 9:26pm

After some checking by @PE0SAT on the current published TLE sets against the Sharjahsat-1 reception, we have ended up that we don’t have an object for that satellite published yet.

This is why we return back to generate our own TLE sets and use them instead of following any of the current objects. So, the latest TLE for Sharjahsat-1, generated by @PE0SAT is this:

1 99204U          23022.58575511  .00000000  00000-0  48289-3 0    07
2 99204  97.5005  84.3763 0012285 145.6443 211.7230 15.12572575    04

It is based on the 55022 objects fitted on the latest strf observation:

ok2pnq · January 24, 2023, 11:15am

Thanks to Eelke and other, I have swiched the receiving side of BDSat-2 groundstation to Celestrak TLE, Norad ID 55098, I am receiving on Win PC, so for data forwarding I use Getkiss+ and it forwards data to Satnogs DB under this ID now. From this time, our packets are not occuring in the BDSat-2 Grafana. Is there anything can be done to merge those packets to BDSat-2? Thank you.

fredy · January 24, 2023, 11:45am

There will be a merge in the next days after the final identification.

ok2pnq · January 24, 2023, 11:48am

OK, I will leave the forwarding working…

fredy · January 24, 2023, 11:52am

Thank you!

Yes these are going to be also decoded after merge and added to the dashboard.

fredy · January 24, 2023, 6:24pm

TLE sets are still 95, reminder that the total of the payloads were 114, from which initially to be deployed were 82 and from them only 78 were confirmed. Here are the latest updates:

Satellite Identifier	Satellite Name	NORAD ID to Follow	Other Possible NORAD IDs	Notes
DELH-6722-1461-1897-7938	Sharjahsat-1	-	-	Received but it doesn’t seem to be fitted on any of the published objects
NJFB-9884-9643-7739-4519	BDSAT-2	55098	-	Received, removed 55103
NJEX-6170-8600-1975-0468	ION SCV-008	55051	-	Received - no update
VPUU-7194-1121-2414-5647	ION SCV-007	55060	-	Received and for now only 55060 fits, however in the last two observations with data (7066554 and 7066545) this object doesn’t seem to fit, it could be another unpublished object or maybe an older TLE used. Needs more investigation.
RJCF-5779-9216-5641-4111	BRO-8	55011	-	Received - no update
PDVW-9191-3063-9872-9368	Vigoride-5	55056	all the rest	Not (recently?) received, changed according to space-track.org
KCKF-9169-8304-1813-6974	Platform-2	55067	55080, 55082(unlikely), 55083	Not (recently?) received, not sure if the object we follow is the right until we confirm previous receptions were from the satellite
TVZK-1463-5590-8994-0377	Connecta T1.2	55012	-	Received - no update
LSZR-8461-9828-5431-6212	Star Vibe	55009	all the rest	Received(?), we need to verify signals are coming from the satellite. OBJECT A(55009) is chosen based on this tweet
JRGY-1674-7223-5551-1972	TAUSAT-2	55073	-	Received, removed 55074, 55075

Given that we have at least one missing object, I think it is wise to wait a couple more days before any identification.