ExoAtmospheres
IAC community database for exoplanet atmospheric observations
WASP-4 b
| Planet status | Confirmed |
|---|---|
| Planet type | Hot Jupiter |
| Period | 1.338231602 d |
| Mass | 1.1974 MJ 380.53372 M⊕ |
| Radius | 1.3846 RJ 15.50752 R⊕ |
| Semi major axis | 0.02312 AU |
| Star name | WASP-4 |
| Star distance | 300 pc |
| Star teff | 5500 K |
| Star radius | 1.15 R☉ |
| Temperature (calculated) | 1870 K |
| V | 12.6 mag |
| J | 11.179 mag |
| K | 10.746 mag |
| Alternate names | |
| Exoplanet Encyclopaedia |  |
Molecules
Molecular ratios: C/O, etc...: Detection
|
HST WFC3 | Re-analysis of 10 Hot-Jupiter Atmospheres with disequilibrium chemistry retrieval2025, Deborah Bardet, Quentin Changeat et al. |
|
Featureless spectra: Detection Dayside Temperature (occultation): 1842 K |
HST WFC3 | Five Key Exoplanet Questions Answered via the Analysis of 25 Hot-Jupiter Atmospheres in Eclipse2022, Changeat, Q., Edwards, B. et al. |
Re-analysis of all available data (HST + Spitzer). Free model: thermal profile is either isothermal or locally inverted. |
Featureless spectra: No detection
|
G-B: Low resolution visible | Gemini/GMOS Transmission Spectral Survey: Complete Optical Transmission Spectrum of the Hot Jupiter WASP-4b2017, Huitson, C. M., Désert, J. -M. et al. |
Transmission spectrum is best fit with a uniform |
Dayside Temperature (occultation): 1832 K |
Spitzer | Secondary Eclipse Photometry of WASP-4b with Warm Spitzer2011, Beerer, Ingrid M., Knutson, Heather A. et al. |
Brightness T = 1832 ± 71 K (at 3.6 µm) and 1632 ± 56 K (at 4.5 µm). Models agree with modest or no thermal inversion |