Observation 5419336: DODONA (99456)

Regarding Observation 5419336 …

Not sure if this is really DODONA or another bird in that pack, but it looks to be ~19k2 baud, doppler is off a bit though

from my other two stations 1675 2510 same signal

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Pretty strong signal for such a low pass, however I’ll do some checks. My guess is that it is either another satellite or a ground station trying to contact a satellite following its doppler shift.

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@fredy, thank you for checking.

My v3 rotator has been under repair for last few days so my yagi antenna has been in a fixed position pointed due east @ 30 deg elevation for all recent observation including this one.

If it were a ground station (was thinking Boston Univ/CuPID station which is ~ 200 km due east for me) but there is signal fading at beginning and end – which is what I’d expect for a satellite since there are mountains to my E and NE and that obstruct at about 6-10 deg elevation.

Since my antenna is in a fixed position I would expect a signal from a ground station to be relatively constant for the duration of the pass. Based on this, I do think it is a satellite that had an approx max elev of 35 degrees at that time – but probably not DODONA.

We may never know! :thinking:

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NOUR 01 maybe. Compare this observation:
https://network.satnogs.org/observations/5432697/

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@EelkeVisser Excellent suggestion!

Looking at the orbital tracks of DODONA/NOUR 01 at the time of this observation, NOUR-1 had a 30 degree max elevation orbital track to my east at the same time

dodona_noor

This would certainly explain the doppler shift and strong signal (by NOUR 01) during the lower elevation DODONA observation at my station. :+1:

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