a'la 2010, would any moons that survive then be considered 'planets' ?
It’d need to be 13 to 80 times more massive to be a brown dwarf.
en.m.wikipedia.org/wiki/Brown_dwarf
If it gained mass rapidly, most all the moons would likely destabilize since they’d have way too little velocity for the orbit they’d now be in. But if they sped up to accommodate, it’d depend on the density change of Jupiter. The fusion would push out material a bit, but the density would probably just increase because of the increased mass.
But if the density stayed the same, the radius would be 2.4 to 4.3 times larger than currently. With Jupiter having a radius of 70,000 km, that’d put it at 170,000 to 300,000 km radius. That’d put Metis and Adrastea inside 170, and Amalthea and Thebe inside 300. They’d already be heavily inside the jovian atmosphere, so they’d be toast. Io, Europa, and maybe others might also fall due to higher atmospheric drag at those levels.
en.m.wikipedia.org/wiki/Moons_of_Jupiter
I think the rest of the moons would be planets then, and the solar system would be a binary system.
loaExMachina@sh.itjust.works 4 months ago
Four of them, the galilean moons would be. The others would be dwarf planets.
fuzzy_feeling@programming.dev 4 months ago
sad pluto noises
loaExMachina@sh.itjust.works 4 months ago
One must imagine Pluto happy.
gedaliyah@lemmy.world 4 months ago
I don’t think they would be dwarf planets, but something else.
A dwarf planet must meet 1 & 2. Are Jupiter’s smaller moons round?
Jupiter has rings, so any planet would have to have cleared the rings around their orbit. I think that applies to the Galilean moons. Juno orbits outside the solar plane, so I’m not sure if that is a rule for a planet or not.
loaExMachina@sh.itjust.works 4 months ago
The largest ring of Jupiter is just about 129 000 km of radius. The nearest Galilean moon to jupiter has a semi-major axis of 421 800 km, so the rings aren’t in any of their orbital neighborhoods.
Beside, the largest of them, Ganymede, is more massive than Mercury.
But you’re right that not all the moons would be either planets or dwarf planets, many would be asteroids.
KillingAndKindess@lemmy.blahaj.zone 4 months ago
From Wikipedia