WASP-193b
| Discovery | |
|---|---|
| Discovered by | Khalid Barkaoui et al. |
| Discovery date | July 2023 (announced) |
| Transit method | |
| Designations | |
| Orbital characteristics | |
| 0.0676±0.0015 AU | |
| Eccentricity | 0.0560+0.0680 −0.0400 |
| 6.2463345(3) d | |
| Inclination | 88.49°+0.78° −0.49° |
| Semi-amplitude | 14.8±3.0 m/s |
| Star | WASP-193 |
| Physical characteristics | |
| 1.464+0.059 −0.057 RJ | |
| Mass | 0.139±0.029 MJ |
Mean density | 0.059+0.015 −0.013 g/cm3 |
| Temperature | 1254±31 K (981 °C; 1,798 °F, equilibrium) |
WASP-193b is a hot, transiting gas giant planet located approximately 1,232 light-years (378 pc) away in the constellation of Hydra, orbiting the F-type star WASP-193. Its discovery was made by the WASP-South transit survey and announced in 2023. The planet is extremely bloated, with a radius nearly 50% larger than Jupiter, despite having only 14% of its mass. This places its density at 0.059 g/cm3, the second lowest of any known exoplanet as of May 2024 after Kepler-51d, and comparable to that of cotton candy (about 0.05 g/cm3).