New data from JSWT hint hot Jupiter WASP 94 Ab formed far out from the star and then migrated inward

19. 5. 2025

New data from JSWT hint hot Jupiter WASP 94 Ab formed far out from the star and then migrated inward

Star system: WASP 94 A | Distance from the Sun: 687 light years

WASP-94Abs misaligned orbit and JWST spectrum reveal a low C/O ratio and near-stellar metallicity. These traits hint it formed far out, accreted solids, then migrated inward. A clear step toward decoding hot Jupiter origins. WASP 94 is a binary star with exoplanets known to be orbiting both A and B components. The system is 687 light years away.

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Scientific study

Tracing the formation and migration history: molecular signatures in the atmosphere of misaligned hot Jupiter WASP-94Ab using JWST NIRSpec/G395H external link

Stars mentioned

WASP 94 A

F8, Yellow-White star

mass: 1.45 M☉

radius: 1.5 R☉

distance: 687 ly

stars in the system: 2

exoplanets: 1

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