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by microtherion
314 days ago
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That's what I (as a layperson) would think. The size of Jupiter, with half to a third of the mass would make it even more gas gianty than Jupiter. … or it has a massive shell that is hollow inside /s. Do any of the other measurements suggest anything about the nature of the surface? |
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aren't we all? /?
> nature of the surface?
so Jupiter is 317.8 M⊕, this thing is around 80-150, but ... Saturn is right there at 80 ... so unlikely to have a solid surface, but likely has a rocky core, and wild winds at this temperature. (Saturn's average temp is -178C, -138C "surface", and this candidate seems to have -48C.)
https://arxiv.org/html/2508.03814v1/MR_relation.jpg
It seems that all of this is based on 2 data points, and they only provide some examples that are consistent with that, but the models are also very low-confidence (as we don't have a lot of data about cold and small orbiting things - as they are hard to detect).
see section 5.2 https://arxiv.org/html/2508.03814v1#S5
but also consistent with the data is that it has ring(s):
Alternate explanations for the F1550C brightness include (1) a knot of exozodiacal emission; or (2) a smaller planet with a circumplanetary ring.