ExoAtmospheres
IAC community database for exoplanet atmospheric observations

 

LTT 3780 c

Planet status Confirmed
Planet type Temperate Sub-Neptune
Period 12.252048 d
Mass 0.0267 MJ 8.48526 M⊕
Radius 0.205 RJ 2.296 R⊕
Semi major axis 0.077 AU
Star name LTT 3780
Star distance 21.981 pc
Star teff 3360 K
Star radius 0.374 R☉
Temperature (calculated) 353 K
V 13 mag
J 9.007 mag
K 8.204001 mag
Alternate names TOI-732 c, LP 729-54 c
Exoplanet Encyclopaedia

Molecules

CH4: Detection

JWST-NIRSpec

A JWST Transmission Spectrum of the Temperate Sub-Neptune TOI-732 c

2025, Frances E. Rigby, Nikku Madhusudhan et al.

NH3: No detection CH4: Upper limit

G-B: High resolution IR

High-resolution Spectroscopic Reconnaissance of a Temperate Sub-Neptune

2024, Samuel H. C. Cabot, Nikku Madhusudhan et al.

Featureless spectra: Upper limit

JWST-MIRI Astro-ph arXiv:2609.05264

Evidence for Cyclohexane features in the MIRI transmission spectrum