ExoAtmospheres
IAC community database for exoplanet atmospheric observations
HD 97658 b
| Planet status | Confirmed |
|---|---|
| Planet type | Hot Sub-Neptune |
| Period | 9.489295 d |
| Mass | 0.0246 MJ 7.81788 M⊕ |
| Radius | 0.2005 RJ 2.2456 R⊕ |
| Semi major axis | 0.08 AU |
| Star name | HD 97658 |
| Star distance | 21.1 pc |
| Star teff | 5170 K |
| Star radius | 0.73 R☉ |
| Temperature (calculated) | 809 K |
| V | 6.27 mag |
| J | 6.203 mag |
| K | 5.734 mag |
| Alternate names | |
| Exoplanet Encyclopaedia |  |
Molecules
He: No detection
|
G-B:Low resolution IR | Nondetection of Helium in the Upper Atmospheres of Three Sub-Neptune Exoplanets2020, Kasper, David, Bean, Jacob L. et al. |
Non-detection above the noise level using Keck/NIRSPEC with a resolving power of R = 25000 |
Featureless spectra: Detection
|
HST WFC3 | Updated Parameters and a New Transmission Spectrum of HD 97658b2020, Xueying Guo, Ian J. M. Crossfield et al. |
atmospheres with high C/O ratios and metallicities of 100 times solar metallicity are favored |
H: Upper limit
|
HST STIS | No hydrogen exosphere detected around the super-Earth HD 97658 b2017, Bourrier, V., Ehrenreich, D. et al. |
No evidence of planetary Ly-a absorption over three visits |