🔭 #Noticia de #Astronomia #Ciencias #InteresGeneral
🟣 TOI-1883 b: the puffiest known super-Neptune orbiting an M dwarf, 383 light-years away
🔗 https://skycr.org/2026/06/12/toi-1883-b-super-neptune-m-dwarf/
Astronomers using the Subaru Telescope have measured the mass and density of TOI-1883 b, a super-Neptune 383 light-years away orbiting an M dwarf every 4.5 days. With a mean density of just 0.4 g/cm³, it is the puffiest super-Neptune ever found around this type of star — and a prime

TOI-1883 b: the puffiest known super-Neptune orbiting an M dwarf, 383 light-years away - SKYCR.ORG
A new Subaru Telescope study confirms TOI-1883 b as the puffiest super-Neptune orbiting an M-dwarf star, with a density of just 0.4 g/cm³ and a mass of ~13.7 Earth masses. Located 383 light-years away in the Neptune desert ridge, the planet is now a priority target for JWST atmospheric characterisation.







