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

Made some Doppler measurements on BDSAT-2. The satellite team was kind enough to schedule the CW Beacon to transmit over my location.

I received 4 passes in total:

Updated TLE:

BDSAT-2
1 99244U          23003.66290553  .00000000  00000-0  55195-2 0    02
2 99244  97.5105  65.7809 0017246 208.7603 148.9286 15.13468127    04
# 20230103.80-20230104.42, 137 measurements, 0.022 kHz rms
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TLE set for BDSAT-2 is now updated on both Network and DB, thanks @EelkeVisser!

Hi,

I was hoping to use ikhonos for TLE correction of ConnectaT1.2 but I could not find documentation on how to do it. Could we do it without CW but lots of data from different observations?

Ikhnos is not for generating TLE set but for checking TLE sets against observations.

What you can do is to check the tabulator software New software: SatNOGS waterfall tabulation helper to extract data from waterfalls and use them in strf tools to generate tools.

However several people use directly strf tools for scanning the frequencies and generate such data with more accuracy. Like the one @EelkeVisser used above.

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I added one “test” transmitter for STAR VIBE - it’s a mission with polish payload, and I managed to ask the person from this company about the frequencies - they said it’s UHF (437.025 MHz) and Sband.

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Approved and some observations scheduled.

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Hi Scott @K4KDR, I just wanted to let you know that Fredy added EPIC CHIMERA LEO 1 with the temporary NORAD ID 99209.

Thanks!

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@UX5UL I’ve seen you have suggested a transmitter for PolyItan HP-30, and you have marked it as IARU coordinated. Is there any link on this coordination as I’m unable to find it in this list.

Martin, was hoping that I might have some good news for you from the 0320utc pass over the U.S. tonight (05-Jan-2023), but while the timing & frequency was right, the baud rate & modulation (4k8 AX.100) was not. However, just to be ABSOLUTELY safe, I wanted to post to make sure this was not your satellite.

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Hi @fredy
Pse check this link
http://www.amsatuk.me.uk/iaru/finished_detail.php?serialnum=885

Thanks @UX5UL I didn’t noticed that QBUA01 is PolyItan HP-30 and that we had duplicate entries in DB… I’ll merge them and fix the transmitter entry to link to the IARU coordination.

EDIT: Changing the current entry is done and merging the duplicate entry too.
EDIT2: Scheduled several observations for it with the right transmitter/frequency and removed the wrong ones.

Thanks @fredy, but I want to note that the modulation will be BPSK 9600 (USB) :wink:
I know this for sure, because I communicate with the developer and manufacturer…

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Thanks! I’ll fix it.

EDIT: FIXED

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New TLE set for Connect T1.2

Connecta T1.2
1 99287U          23005.80000000  .00000000  00000-0  00000-0 0    06
2 99287  97.5114  67.7524 0011673 220.6372 241.6746 15.11959301    00

ct1.2.dat (1.5 KB)
sites.txt (1.7 KB)

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Together with the BDSAT-2 satellite team I measured another 2 passes. Here is the best one:

The previous TLE started to deviate a little bit. I also noticed, that the Celestrak TLE I used as a basis had a high drag term. This is probably true for other satellites as well, and now caused trouble to fit the fresh data. I choose to use a lower drag value, that I took from the similar predecessor BDSAT. Now I can get a satisfying fit.

The updated TLE:

BDSAT-2
1 99244U          23003.66290553  .00000000  00000-0  63626-3 0    01
2 99244  97.5105  65.7809 0017246 208.7603 148.8995 15.13538407    09
# 20230103.80-20230106.46, 221 measurements, 0.023 kHz rms
5 Likes

Super, thanks a lot!

A minor update for BDSAT-2:

BDSAT-2
1 99244U          23006.87518519  .00000000  00000-0  30611-3 0    00
2 99244  97.5105  68.9274 0017154 195.0954  14.7366 15.13591379    05
# 20230103.80-20230106.85, 268 measurements, 0.023 kHz rms

If anyone wants to play with tthe data:
99244_BDSAT-2.dat (11.0 KB)
sites.txt (98 Bytes)

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From the observations of the last days it seems that Chemira Leo is mute.
Anyone have news about Orbiter SN1? There is no official information since its launch.

Anyone have news about Orbiter SN1

I’m only hearing 3rd-party impressions that payload owners are not enthusiastic that there will ever be any deployment of their sats.

We’ve seen that turn-around in past missions (malfunctioning deployers that eventually deploy at least SOME objects), so let’s hope something might still happen for these satellites.

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New TLE set for Connecta T1.2

Connecta T1.2
1 99287U          23008.30000000  .00000000  00000-0  00000-0 0    04
2 99287  97.5114  70.4107 0011673 318.7215  62.4740 15.11964980    05

ct12-1.dat (2.3 KB)
sites.txt (1.9 KB)

1 Like