ExoAtmospheres
IAC community database for exoplanet atmospheric observations
WASP-43 b
| Planet status | Confirmed |
|---|---|
| Planet type | Hot Jupiter |
| Period | 0.81347753 d |
| Mass | 2.052 MJ 652.1256 M⊕ |
| Radius | 1.036 RJ 11.6032 R⊕ |
| Semi major axis | 0.01526 AU |
| Star name | WASP-43 |
| Star distance | 86.7467 pc |
| Star teff | 4520 K |
| Star radius | 0.667 R☉ |
| Temperature (calculated) | 1440 K |
| V | 12.4 mag |
| J | 9.995 mag |
| K | 9.267 mag |
| Alternate names | |
| Exoplanet Encyclopaedia |  |
Molecules
CO: Detection CO2: Detection H2O: Detection SO2: Upper limit
|
JWST-MIRI | Phase-dependent chemistry of WASP-43 b revealed with a suite of one-, two-, and three-dimensional models2026, Robin Baeyens, Julianne I. Moses et al. |
|
H2O: Upper limit
|
HST WFC3 | The Transit Timing and Transmission Spectrum of Hot Jupiter WASP-43 b from a decade of Multi-band Transit Follow-up Observations2026, Napaporn A-thano, Supachai Awiphan et al. |
Spectrum from HST+JWST+ground-based color photometry. Retrieved parameters strongly depend on the data points considered |
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. |
|
H2O: Detection CO: Upper limit CO2: Upper limit CH4: Upper limit Molecular ratios: C/O, etc...: Upper limit
|
G-B: High resolution IR | A Measurement of the Water Abundance in the Atmosphere of the Hot Jupiter WASP-43b with High-resolution Cross-correlation Spectroscopy2024, Dare Bartelt, Megan Weiner Mansfield et al. |
Upper limit on the C/O ratio <0.95 |
Albedo: 0.26 Phase curve: Yes Dayside Temperature (occultation): 1510 K |
Spitzer | A Comprehensive Analysis Spitzer 4.5 $μ$m Phase Curve of Hot Jupiters2024, Lisa Dang, Taylor J. Bell et al. |
Dayside and nightside temperatures from phase curve at 4.5 um |
Phase curve: Yes Dayside Temperature (occultation): 99999 K |
JWST-NIRSpec | Latitudinal Asymmetry in the Dayside Atmosphere of WASP-43b2024, Ryan C. Challener, Zafar Rustamkulov et al. |
Latitudinal Asymmetry in the Dayside Atmosphere |
CO: Detection H2O: Detection NH3: Detection CH4: No detection Molecular ratios: C/O, etc...: Detection
|
JWST-MIRI | Simultaneous retrieval of orbital phase resolved JWST/MIRI emission spectra of the hot Jupiter WASP-43b: evidence of water, ammonia and carbon monoxide2024, Jingxuan Yang, Mark Hammond et al. |
|
Phase curve: Yes |
JWST-MIRI | Two-Dimensional Eclipse Mapping of the Hot Jupiter WASP-43b with JWST MIRI/LRS2024, Mark Hammond, Taylor J. Bell et al. |
Two-Dimensional Eclipse Mapping |
H2O: Detection Cloudy: Detection Phase curve: Yes Dayside Temperature (occultation): 1524 K |
JWST-MIRI | Nightside clouds and disequilibrium chemistry on the hot Jupiter WASP-43b2024, Taylor J. Bell, Nicolas Crouzet et al. |
|
Molecular ratios: C/O, etc...: Detection CO: Detection H2O: Detection CH4: Upper limit
|
G-B: High resolution IR | Retrieval of the dayside atmosphere of WASP-43b with CRIRES+2023, F. Lesjak, L. Nortmann et al. |
C/O ratio and CO detections, and evidence of H2O with CRIRES+ |
Albedo: 0.087 Phase curve: Yes |
CHEOPS | The phase curve and the geometric albedo of WASP-43b measured with CHEOPS, TESS and HST WFC3/UVIS2022, G. Scandariato, V. Singh et al. |
Albedo Upper limit . TESS+Spitzer+CHEOPS |
Albedo: 0.1 |
G-B: Low resolution visible | Geometric albedos at short optical wavelengths for the hot Jupiters WASP-43b, WASP-103b, and TrES-3b2022, Matthias Mallonn, Enrique Herrero et al. |
geometric albedo in Johnson B: 0.18 ± 0.29 ; in Johnson V: 0.00 ± 0.11 |
Phase curve: Yes |
HST WFC3 | Exoplanet atmosphere retrievals in 3D using phase curve data with ARCiS: application to WASP-43b2022, Katy L. ChubbMichiel Min |
A retrieval framework which encapsulates the 3D nature of exoplanet atmospheres, |
CO2: Detection H2O: Detection
|
HST WFC3 | Five key exoplanet questions answered via the analysis of 25 hot Jupiter atmospheres in eclipse2022, Quentin Changeat, Billy Edwards et al. |
|
Albedo: 0.116 |
TESS | Constraints on TESS albedos for five hot Jupiters2022, Martin Blažek, Petr Kabáth et al. |
3σ upper limit geometric albedo of 0.154 |
H2O: Detection AlO: Detection
|
HST WFC3 | Aluminium oxide in the atmosphere of hot Jupiter WASP-43b2020, Chubb, Katy L., Min, Michiel et al. |
|
Phase curve: Yes |
Spitzer | An Independent Analysis of the Spitzer/IRAC Phase Curves of WASP43 b2019, Morello, G., Danielski, C. et al. |
|
H2O: Detection
|
HST WFC3 | A Precise Water Abundance Measurement for the Hot Jupiter WASP-43b2014, Kreidberg, Laura, Bean, Jacob L. et al. |
H2O detected in both transmission and emission spectra |
Featureless spectra: Detection
|
JWST-MIRI | Astro-ph arXiv:2609.05264 | Molecules have not enough evidence to explain the MIRI transmission spectrum |
Albedo: 0.1 Phase curve: Yes |
TESS | Astro-ph arXiv:2609.10719 | Mid-eclipse depth of 130 ± 34 ppm with an eastward phase curve offset of 44 ± 18 degrees |