ExoAtmospheres
IAC community database for exoplanet atmospheric observations

 

TOI-776 c

Planet status Confirmed
Planet type Warm Sub-Neptune
Period 15.665323 d
Mass 0.0217 MJ 6.89626 M⊕
Radius 0.1829 RJ 2.04848 R⊕
Semi major axis 0.1 AU
Star name TOI-776
Star distance 27.19 pc
Star teff 3709 K
Star radius 0.538 R☉
Temperature (calculated) 420 K
V 11.5 mag
J 8.483 mag
K 7.615 mag
Alternate names
Exoplanet Encyclopaedia

Molecules

Featureless spectra: Detection

JWST-NIRSpec

JWST COMPASS: NIRSpec/G395H Transmission Observations of TOI-776 c, a 2 Rearth M Dwarf Planet

2025, Johanna Teske, Natasha E. Batalha et al.

No strong evidence for molecular features in the 3–5 µm transmission spectrum.

H: Detection

HST STIS

Hydrogen escaping from a pair of exoplanets smaller than Neptune

2025, Loyd, R. O. Parke, Schreyer, Ethan et al.

Escaping H atmosphere via Ly-alpha detection