ExoAtmospheres
IAC community database for exoplanet atmospheric observations
GJ 504 b
| Planet status | Confirmed |
|---|---|
| Planet type | Warm Jupiter |
| Period | N/A |
| Mass | 4 MJ 1271.2 M⊕ |
| Radius | 0.96 RJ 10.752 R⊕ |
| Semi major axis | 43.5 AU |
| Star name | GJ 504 |
| Star distance | 17.56 pc |
| Star teff | 6291 K |
| Star radius | N/A |
| Temperature (calculated) | 544 K |
| V | 5.22 mag |
| J | N/A |
| K | N/A |
| Alternate names | e Vir b |
| Exoplanet Encyclopaedia |  |
Molecules
CO: Detection CO2: Detection NH3: Detection H2O: Detection CH4: Detection H2S: Detection Molecular ratios: C/O, etc...: Detection Cloudy: Detection
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JWST-NIRSpec | JWST-TST High Contrast: First Direct Spectroscopy of GJ 504 b reveals Clouds and Possible Metal Enrichment2026, Aneesh Baburaj, Jean-Baptiste Ruffio et al. |
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NH3: Detection
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JWST-MIRI | First unambiguous detection of ammonia in the atmosphere of a planetary mass companion with JWST/MIRI coronagraphs2025, Mâlin, Mathilde, Boccaletti, Anthony et al. |
Direct imaging with JWST-MIRI coronagraph |