ExoAtmospheres
IAC community database for exoplanet atmospheric observations
K2-22 b
| Planet status | Confirmed |
|---|---|
| Planet type | UltraHot Sub-Neptune |
| Period | 0.381078 d |
| Mass | 1.4 MJ 444.92 M⊕ |
| Radius | 0.223 RJ 2.4976 R⊕ |
| Semi major axis | 0.0088 AU |
| Star name | K2-22 |
| Star distance | 245.53 pc |
| Star teff | 3830 K |
| Star radius | 0.57 R☉ |
| Temperature (calculated) | 2100 K |
| V | 17 mag |
| J | 12.726 mag |
| K | 11.924 mag |
| Alternate names | K2-22 b, 2MASS J11175587+0237086 b, EPIC 201637175 A b, EPIC 201637175 b, EPIC 201637175.01, K2-22 A b, WISE J111755.84+023708.4 b |
| Exoplanet Encyclopaedia |  |
Molecules
Featureless spectra: No detection
|
JWST-MIRI | A Disintegrating Rocky World Shrouded in Dust and Gas: Mid-IR Observations of K2-22b using JWST2025, Nick Tusay, Jason T. Wright et al. |
Only 1 of 4 transits are detected. For that transit, flat line model is strongly disfavored |
Na: Upper limit Ca+: Upper limit
|
G-B: High resolution visible | Search for gas from the disintegrating rocky exoplanet K2-22b2019, A. R. Ridden-Harper, I. A. G. Snellen et al. |
Four transits with VTL/X-SHOOTER. Na upper limit of 13%, and Ca II upper limit of 2%. |
Na: Upper limit
|
G-B: High resolution visible | Monitoring of the D Doublet of Neutral Sodium during Transits of Two "Evaporating" Planets2019, Eric Gaidos, Teruyuki Hirano et al. |