Theoretically, there could be a rogue planet made of iron or even osmium in large quantities, which can make it have 25 Earth masses within the volume of 1 Earth Radii. So if this object came near Jupiter, would it be enough to absorb the matter from Jupiter at close orbits due to high density and would this rogue planet basically turn into a gas giant or is the tidal forces not high enough?

So assume that the rogue planet orbits within 20 km of Jupiter's surface.

Also if this rogue planet crashed into Jupiter, would it survive all the way and turn Jupiter into an accretion disk around it?

Is this planet basically just like a black hole except much less dense and massive but still very destructive and could it rip the sun into a bunch of gas due to object's immense density and surface gravity and turn it into an accretion disk or would this object get torn by the Sun?

  • $\begingroup$ Jupiter is worth 317 M🜨, it will likely just absorb a 25M🜨 planet if it collides - this object you suggested weighs a mere 8% of its total mass. If it passes by without being absorbed, however, then perhaps it will strip some mass. $\endgroup$
    – 4NT4R3S
    Commented Mar 13 at 0:48
  • $\begingroup$ What if it was orbiting Jupiter at 100 kilometers above its surface? Would Jupiter lose mass to the planet? $\endgroup$ Commented Mar 13 at 1:06
  • $\begingroup$ It might be stripped a bit, but overall Jupiter should have more influence $\endgroup$
    – 4NT4R3S
    Commented Mar 13 at 1:23
  • 4
    $\begingroup$ "Theoretically" a planet could not be made of osmium, because there is no process that could separate the osmium in the dust orbiting a young star and form it into a planet. So this is not a possibility in theory. $\endgroup$
    – James K
    Commented Mar 13 at 7:31
  • 3
    $\begingroup$ No, unless you are thinking of Magrathea, but the galaxy isn't nearly wealthy enough yet. $\endgroup$
    – James K
    Commented Mar 13 at 20:43


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