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The Stumbling Dance of Two Planets Around TOI-4495 ⚡ экспресс

Original: "TOI-4495: A Pair of Aligned, Near-Resonant Sub-Neptunes that Likely Experienced Overstable Migration"
arXiv:2601.02665v1 · 2026-01-06 · CC BY 4.0 · ⏱ 1 min · Exoplanets
Two planets around the star TOI-4495 are nearly in sync, but their dance has stumbled, prompting a search for hidden causes.
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Two planets around TOI-4495 dance almost in unison: the inner completes two orbits while the outer manages one. But their step has faltered, and the inner planet shimmies slightly. This can only hold up if its insides don't lose too much heat.

🎯 A 2:1 orbital resonance also exists in our solar system: Jupiter's moons Io and Europa move in the same rhythm, but without stumbling.

Scientists
Christian DopplerD. B. McLaughlinDidier QuelozMichel MayorR. A. RossiterDavid Charbonneau
Tags
exoplanet transit method photometry spectroscopy
Laws
Doppler effectKepler's third lawMaxwell's equationsPlanck's lawPlanck–Einstein relationWien's displacement law
Original: arXiv:2601.02665v1 · CC BY 4.0 · bridge42worlds