ExoAtmospheres
IAC community database for exoplanet atmospheric observations
TRAPPIST-1 g
| Planet status | Confirmed |
|---|---|
| Planet type | Cold Earth-size |
| Period | 12.35294 d |
| Mass | 0.0042 MJ 1.33476 M⊕ |
| Radius | 0.1005 RJ 1.1256 R⊕ |
| Semi major axis | 0.0451 AU |
| Star name | TRAPPIST-1 |
| Star distance | 12.1 pc |
| Star teff | 2560 K |
| Star radius | 0.117 R☉ |
| Temperature (calculated) | 198 K |
| V | 18.798 mag |
| J | 11.354 mag |
| K | 10.296 mag |
| Alternate names | |
| Exoplanet Encyclopaedia |  |
Molecules
H: Upper limit
|
HST STIS | Hubble's Multi-Year Search for Exospheres in the TRAPPIST-1 System Reveals Frequent Microflares2025, David Berardo, Julien de Wit et al. |
Lya is not very constrained due to the effect of microflares in the out-of-transit baseline, transit depth <20% at 5σ |
Featureless spectra: Detection
|
HST WFC3 | Disentangling the Planet from the Star in Late-Type M Dwarfs: A Case Study of TRAPPIST-1g2019, Wakeford, H. R., Lewis, N. K. et al. |