ExoAtmospheres
IAC community database for exoplanet atmospheric observations
GJ 3090 b
| Planet status | Confirmed |
|---|---|
| Planet type | Warm Sub-Neptune |
| Period | 2.8531054 d |
| Mass | 0.0105 MJ 3.3369 M⊕ |
| Radius | 0.19 RJ 2.128 R⊕ |
| Semi major axis | 0.03165 AU |
| Star name | GJ 3090 |
| Star distance | 22.444 pc |
| Star teff | 3556 K |
| Star radius | 0.516 R☉ |
| Temperature (calculated) | 692 K |
| V | 11 mag |
| J | 8.168 mag |
| K | 7.294 mag |
| Alternate names | TOI-177.01 |
| Exoplanet Encyclopaedia |  |
Molecules
He: Detection Molecular ratios: C/O, etc...: Detection
|
JWST-NIRSpec | Escaping Helium and a Highly Muted Spectrum Suggest a Metal-Enriched Atmosphere on Sub-Neptune GJ3090b from JWST Transit Spectroscopy2025, Eva-Maria Ahrer, Michael Radica et al. |
Stellar activity can explain the NIRISS/SOSS observations. They can only constrain metallicity and C/O values |
H2O: Upper limit CH4: Upper limit NH3: Upper limit H2S: Upper limit
|
G-B: High resolution IR | Limits on the atmospheric metallicity and aerosols of the sub-Neptune GJ 3090 b from high-resolution CRIRES+ spectroscopy2025, Luke T. Parker, João M. Mendonça et al. |
|
He: Detection
|
G-B: High resolution IR | Astro-ph arXiv:2609.14704 |