Being late to the ID party for this launch I give only PSAT-2 a try.
Analyzed observations (838575, 838563), 838584, 838585, 838588, 845205 with the new waterfall tabulation helper and STRF.
||center freq / MHz
||rms / kHz
So, currently 44354 matches the SSTV observations from PSAT-2 best (followed by 44355).
Note that all fits show rather large residues for my taste (but I don’t have much experience with this manual tabulation method yet, so this might be expected / I didn’t do any error propagation).
I’ve repeated the analysis, this time using five AFSK1k2 observations since this transmitter drifts less compared to the SSTV one (thanks @vk5qi and @fredy for pointing this out to me!). With 0.354 / 0.440 kHz for 44354/44355 the resulting residues are indeed smaller.