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Scientists baffled by ‘Hot Jupiter’ exoplanet’s irregular motion
- The discovery of planets outside our solar system has reshaped humanity’s understanding of the universe.
- However, theories about the formation of hot Jupiters typically fall into two camps,
- Published in The Astrophysical Journal Letters, scientists have discovered that TOI-1408c, a peculiar planet in a system featuring a hot Jupiter, sheds new light on planetary formation theories and the complex dynamics of such systems.
- TOI-1408b, a grazing hot Jupiter, orbits its star every 4.42 days.
- Its companion, TOI-1408c, is a smaller planet with a radius 2.2 times that of Earth and a mass approximately eight times that of Earth.
- Transit timing variations are changes in a planet’s orbital timing caused by gravitational interactions with nearby planets.
- For TOI-1408c, these variations amount to 15% of its orbital period—the largest relative TTV amplitude ever measured.
- TOI-1408c’s peculiarities lie not only in its orbital dynamics but also in its proximity to a hot Jupiter.
- Discoveries like TOI-1408c advance our understanding of how planets form and evolve.
- As TESS and other instruments uncover more exoplanets, scientists hope to build a more comprehensive picture of the processes governing planetary systems.
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