WASP-150 b
WASP-150 b is a hot Jupiter orbiting the F8 star WASP-150 in the constellation Draco. It lies about 1,722 light-years from Earth and was discovered in 2020 using the transit method.
How Big Is WASP-150 b?
WASP-150 b has a radius of 11.99 times that of Earth, or 1.07 times the radius of Jupiter. Its mass is 2,689 times that of Earth, giving it a density of 8.54 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is WASP-150 b in the Habitable Zone?
WASP-150 b orbits inside the inner edge of the habitable zone of WASP-150. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of WASP-150: 1.397–3.258 AU (conservative: 1.769–3.089 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on WASP-150 b
The equilibrium temperature of WASP-150 b is about 1,460 K (1,187 °C) — hot enough to melt many metals. This estimate ignores any atmosphere, which could change surface temperatures dramatically — Earth's greenhouse effect adds about 33 °C.
Orbit and Year Length
A year on WASP-150 b — one full orbit around WASP-150 — lasts 5.64 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.069 AU — closer to its star than Mercury is to the Sun. Its orbit is highly elliptical (eccentricity 0.38), swinging dramatically closer to and farther from its star.
How Was WASP-150 b Discovered?
WASP-150 b was discovered in 2020 using the transit method, with observations from SuperWASP-North.
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is WASP-150 b?
WASP-150 b is 1,722.1 light-years (528.0 parsecs) from Earth. Light arriving here tonight left the planet about 1,722 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 30,308,960 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. WASP-150 b scores 0.08, ranking #4,784 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-150
WASP-150
- Spectral type
- F8
- Surface temperature
- 6,218 K (Sun: 5,772 K)
- Mass
- 1.39 M☉
- Radius
- 1.65 R☉
- Age
- 3.0 billion years (Sun: 4.6)
Planetary System
WASP-150 b is the only planet known to orbit WASP-150 so far.
WASP-150 b — Complete Data
| Radius | 11.994 Earth radii (1.070 Jupiter radii) |
|---|---|
| Mass | 2,688.84 Earth masses (8.460 Jupiter masses) |
| Density | 8.54 g/cm³ (Earth: 5.51) |
| Orbital period | 5.64 days |
| Orbital distance | 0.069 AU |
| Eccentricity | 0.378 |
| Equilibrium temperature | 1,460 K (1,187 °C) |
| Earth Similarity Index | 0.08 |
| Distance from Earth | 1,722.1 light-years (528.0 parsecs) |
| Constellation | Draco |
| Discovery method | Transit |
| Discovery facility | SuperWASP-North |
| Discovery year | 2020 |
Data: NASA Exoplanet Archive, last updated 2020-05-15. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-150 b
Is WASP-150 b habitable?
No — WASP-150 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is WASP-150 b?
WASP-150 b is about 1,722 light-years from Earth in the constellation Draco. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 30,308,960 years to get there.
How big is WASP-150 b compared to Earth?
WASP-150 b has 11.99 times the radius of Earth and about 2,689 times its mass.
How long is a year on WASP-150 b?
One orbit around WASP-150 takes 5.6 Earth days — short enough that 65 of its years would fit into one Earth year.
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