ExoAtmospheres
IAC community database for exoplanet atmospheric observations

 

V 1298 Tau e

Planet status Confirmed
Planet type Warm Neptune
Period 50.29 d
Mass 0.0872 MJ 27.71216 M⊕
Radius 0.4389 RJ 4.91568 R⊕
Semi major axis 0.308 AU
Star name V 1298 Tau
Star distance 108.5 pc
Star teff 4970 K
Star radius 1.305 R☉
Temperature (calculated) 492 K
V 10.1 mag
J N/A
K N/A
Alternate names
Exoplanet Encyclopaedia

Molecules

CO2: Detection CH4: Detection HCN: Upper limit CO: Upper limit H2O: Upper limit SO2: Upper limit H2S: Upper limit CS2: Detection

JWST-NIRSpec

Photochemical CS$_2$ Gas Detected on a 20-Myr-old Exoplanet

2026, Fei Dai, Erik Petigura et al.

CS2 detected product of photochemistry. Tentative evidence for HCN, CS, and CO; and no evidence H2O, OCS, SO, SO2, H2S