WASP-91 b
A confirmed exoplanet orbiting WASP-91.
Compared with Earth
- Size
- About 12 times Earth's width.
- Mass
- About 426 times Earth's mass.
- Temperature
- About 887 °C (1,628 °F) from starlight alone, against -18 °C (-1 °F) for Earth measured the same way.
- Year
- A year here lasts about 2.8 Earth days.
Planet
- Radius
- 11.55 × Earth
- Mass
- 425.9 × Earth
- Density
- 1.59 g/cm³
- Equilibrium temperature
- 1,160 K
- Starlight received
- Unknown
- Orbital period
- 2.799 days
- Average distance from its star
- 0.037 AU
Star
- Host star
- WASP-91
- Spectral class
- K — orange dwarf
- Surface temperature
- 4,920 K
- Radius
- 0.86 × Sun
- Mass
- 0.84 × Sun
- Age
- Unknown
System
- Distance from Earth
- 489 light-years (149.9 parsecs)
- Stars in system
- 1
- Known planets
- 1
Discovery
- Year
- 2017
- Method
- Transit
- Facility
- SuperWASP-South
Data from the NASA Exoplanet Archive, synced October 14, 2026.