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Health & Science2h 23m ago
Astronomers using the Subaru Telescope conducted follow-up observations of exoplanet TOI-1883 b and determined its mass to be approximately 13.7 Earth masses, classifying it as a low-density super-Neptune.
383 light-years from Earth, in the orbital system of M-dwarf star TOI-1883
Who
astronomers led by Izuru Fukuda of the University of Tokyo in Japan
What
Astronomers using the Subaru Telescope conducted follow-up observations of exoplanet TOI-1883 b and determined its mass to be approximately 13.7 Earth masses, classifying it as a low-density super-Neptune.
When
Fri, 12 Jun 2026 12:00:04 GMT · 2h 23m ago
Where
383 light-years from Earth, in the orbital system of M-dwarf star TOI-1883 ·
Why
to shed more light on the properties of TOI-1883 b, whose mass had remained undetermined after its discovery in 2024
The Frontline Impact
How this affects you
This research identified a super-Neptune with the lowest known density among super-Neptunes orbiting M dwarf stars, contributing to our understanding of exoplanet formation and the Neptunian desert phenomenon in which planets are scarce at short orbital periods.
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