The ESA OPS-SAT launch is coming fast. It would be awesome if we could get the necessary SatNOGS DB entries update on time and see the community help us track the first “beeps” of our baby.
Orbit is 530 km SSO, LTAN 06:00
Preliminary TLE set is available there: https://opssat1.esoc.esa.int/tle.txt
We should have a post-deployment predicted TLE around 14:00 on the launch day (40 minutes after planned deployment). We will then update the linked file.
For now we use a dummy NORAD ID of 99992 and COSPAR 00000A. As soon as we get proper numbers assigned and the first NORAD TLE published, we will mirror them there.
Once we establish the on-board orbit determination, we might decide to publish TLE generated that way.
Launch timeline on the 17th
(UTC, all timestamps approximate, subject to corrections)
13:05 OPS-SAT deployment
13:35 The OBSW starts the autodeployment
13:40 Autodeployment finishes
13:50 Beacons transmitted with 10 second interval
~15:56 First ground station pass
3 radio modules:
- GOMspace NanoCom AX-100 UHF Transceiver
- Syrlinks EWC31 S-Band Transceiver
- Syrlinks EWC27 X-Band Transmitter
UHF link parameters:
Half-Duplex 437.2 MHz/GMSK/BW 25 kHz/Baud 9k6/m=0.5
AX.25 with HDLC (see below examples and full specification)
Full downlink specification in PDF:
Beacon demodulation and decoding pipeline created by my colleagues Ben and Tom:
Let me know if you have any more questions.