TOI-3757 b
| Discovery | |
|---|---|
| Discovered by | Kanodia et al. |
| Discovery date | 2022 |
| Transit | |
| Orbital characteristics | |
| 0.03845±0.00043 AU | |
| Eccentricity | 0.14±0.06 |
| 3.438753±0.000004 d | |
| Inclination | 86.76+0.20 −0.23° |
| 130±23° | |
| Star | TOI-3757 |
| Physical characteristics | |
| 12.0+0.4 −0.5 R🜨 | |
| Mass | 85.3+8.8 −8.7 M🜨 |
Mean density | 0.27+0.05 −0.04 g/cm3 |
| Temperature | 759±13 K |
TOI-3757 b is a gas giant exoplanet located in the constellation of Auriga 578 light years, or 177 parsecs, away from Earth. It is well known for having a low density; as a result, it has been monikered the 'fluffiest planet ever' and the 'marshmallow world'. Its density is 0.27+0.05
−0.04 g/cm3, so low that it could float in a bathtub large enough to hold it. It is the least dense planet discovered around a red dwarf star, and also has the lowest metallicity of an gas giant around a red dwarf.