I don't have much this week, so I'll just drop the hype about Tyche - rather, Fortuna, since we're Latins. This isn't the name I'd choose... but it might actually be the anti-Nine. That is: what they've seen on the plates is incompatible with the orbit which Dr Brown and Dr Batygin have predicted.
Since that other candidate was scotched...
If Fortuna does exist, I'm happy with that name. But if the predicted Nine is found, it should be Proserpine.
UPDATE 5/21: 2017 OF201, maybe 700 km if tholin-rich 0.15 albedo. That would be a sub-Orcus. Tholins are, I think, a product of stellar radiation: Eris and Sedna are icier and brighter than Pluto. If this new body shines over 0.4 albedo, it is smaller. The main point stands: this too flies against Planet Nine (usually "X" there).
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