ExoAtmospheres
IAC community database for exoplanet atmospheric observations
WASP-178 b
| Planet status | Confirmed |
|---|---|
| Planet type | UltraHot Jupiter |
| Period | 3.3448285 d |
| Mass | 1.41 MJ 448.098 M⊕ |
| Radius | 1.94 RJ 21.728 R⊕ |
| Semi major axis | 0.0558 AU |
| Star name | WASP-178 |
| Star distance | 417 pc |
| Star teff | 8640 K |
| Star radius | 1.801 R☉ |
| Temperature (calculated) | 2402 K |
| V | 9.95 mag |
| J | 9.8 mag |
| K | 9.703 mag |
| Alternate names | KELT-26 b |
| Exoplanet Encyclopaedia |  |
Molecules
Fe: Detection Ca: Upper limit Si: Upper limit
|
G-B: High resolution visible | High-Resolution Dayside Spectroscopy of the Ultra-Hot Jupiter WASP-178b with GHOST/Gemini South2026, Caitlin E. Bell, Emily K. Deibert et al. |
|
CO: Detection CO2: Detection Molecular ratios: C/O, etc...: Detection
|
JWST-NIRSpec | A Metal-Rich Atmosphere with a Super-Solar C/O Ratio for the Extreme Ultra-Hot Jupiter WASP-178b2025, Suman SahaJames S. Jenkins |
|
H2O: Detection CO: Detection Molecular ratios: C/O, etc...: Detection
|
JWST-NIRSpec | Refractory and Volatile Species in the UV-to-IR Transmission Spectrum of Ultra-hot Jupiter WASP-178b with HST and JWST2025, Joshua D. Lothringer, Katherine A. Bennett et al. |
Combination of HST near-UV observations with JWST |
Na: Detection H: Detection Fe: Detection Fe+: Detection Mg: Detection Li: Upper limit
|
G-B: High resolution visible | The atmospheric composition of the ultra-hot Jupiter WASP-178 b observed with ESPRESSO2024, Y. C. Damasceno, J. V. Seidel et al. |
Two transits with ESPRESSO. Detection of Halpha, Hbeta. Non-detection of Li 6708Ang |
Molecular ratios: C/O, etc...: Detection H2O: Detection CO: Detection OH: Upper limit Fe: Upper limit
|
G-B: High resolution IR | Exploring the ultra-hot Jupiter WASP-178b. Constraints on atmospheric chemistry and dynamics from a joint retrieval of VLT/CRIRES$^+$ and space photometric data2024, D. Cont, L. Nortmann et al. |
CRIRES+ dayside observations. Non detections of Fe and OH due to very few lines in the observed range. |
Albedo: 0.35 Dayside Temperature (occultation): 2800 K |
CHEOPS | Constraining the reflective properties of WASP-178b using Cheops photometry2023, I. Pagano, G. Scandariato et al. |
The geometric albedo 0.1 |
Rayleigh Scattering: Detection
|
HST-Other | UV Absorption by Silicate Cloud Precursors in Ultra-hot Jupiter WASP-178b2022, Joshua D. Lothringer, David K. Sing et al. |
Significant NUV absorption, probably associated to SiO |