ExoAtmospheres
IAC community database for exoplanet atmospheric observations
GJ 357 b
| Planet status | Confirmed |
|---|---|
| Planet type | Warm Earth-size |
| Period | 3.93086 d |
| Mass | 0.0066 MJ 2.09748 M⊕ |
| Radius | 0.1041 RJ 1.16592 R⊕ |
| Semi major axis | 0.033 AU |
| Star name | GJ 357 |
| Star distance | 9.444 pc |
| Star teff | 3505 K |
| Star radius | 0.337 R☉ |
| Temperature (calculated) | 525 K |
| V | 10.91 mag |
| J | 7.337 mag |
| K | 6.475 mag |
| Alternate names | TOI-562.01 |
| Exoplanet Encyclopaedia |  |
Molecules
Dayside Temperature (occultation): 923 K |
JWST-MIRI | Hot Rocks Survey VI: An anomalously hot dayside for the rocky planet GJ 357 b2026, Merlin Zgraggen, Brice-Olivier Demory et al. |
Measurements not explained by current models |
Featureless spectra: Detection
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JWST-NIRSpec | JWST COMPASS: A NIRSpec G395H Transmission Spectrum of the Super-Earth GJ 357 b2025, Jea Adams Redai, Nicholas Wogan et al. |
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Featureless spectra: Detection
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JWST-NIRISS | JWST NIRISS Transmission Spectroscopy of the Super-Earth GJ 357b, a Favourable Target for Atmospheric Retention2025, Jake Taylor, Michael Radica et al. |
Partial transit observed with JWST NIRISS/SOSS |