The planet is in the wrong place.

“LHS 1903 is a small red M-dwarf star that is cooler and shines less brightly than our Sun. Scientists used telescopes in space and on Earth to discover four planets orbiting LHS 1903. With those telescopes, they classified the three closest planets to the star as the innermost being rocky, and the two that follow it as gas giants. Credit: ESA” (ScitechDaily, Astronomers Stunned by Rocky Planet in the Wrong Place)

“Scientists have identified a rocky outer planet in a system where a gas giant was expected. The discovery challenges traditional models and supports the idea that planets may form one by one in changing environments.” (ScitechDaily, Astronomers Stunned by Rocky Planet in the Wrong Place)

Could xxoplanet LHS 1903 e be a rogue planet that a red dwarf HS 1903 captured? This explains the exoplanet’s wrong trajectory. 

The exoplanet  LHS 1903 e is a rocky world near a red dwarf star LHS 1903. This planet is extraordinary. Because of its trajectory. The LHS 1903 has a planetary system, where the closest exoplanet is a rocky world. Then there will be two scaled-down versions of Neptune. So, those planets are gas-rich. But then. The last known planet, LHS 1903 e. 

It is again a rocky world. This means that the LHS 1903 e doesn’t follow the rule about the order of the planets. So, this “wrong position”. Causes an idea. This exoplanet could have originated around some other star. And then that star lost this planet. Maybe the nova or supernova eruption kicked that exoplanet LHC 1903 e from its trajectory. 

So, could the origin of the dwarf planet Pluto in our solar system be a rogue planet? 

The hypothesis about the rogue planet that the star captured can explain some details about the dwarf planet Pluto and its moon, Charon. There are several theories about the origin of Pluto. The first one is that Pluto’s origin was as the moon of Uranus or Neptune. The one other explanation . About Pluto. It could be. That Pluto. It was. Some kind of rogue asteroid. Or a dwarf planet. That our solar system captured.

https://scitechdaily.com/astronomers-stunned-by-rocky-planet-in-the-wrong-place/