WASP-167 b
WASP-167 b is a hot Jupiter orbiting the F1 V star WASP-167 in the constellation Centaurus. It lies about 1,381 light-years from Earth and was discovered in 2017 using the transit method.
How Big Is WASP-167 b?
WASP-167 b has a radius of 17.71 times that of Earth, or 1.58 times the radius of Jupiter. Its mass is 2,543 times that of Earth.
Is WASP-167 b in the Habitable Zone?
WASP-167 b orbits inside the inner edge of the habitable zone of WASP-167. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of WASP-167: 1.838–4.242 AU (conservative: 2.328–4.022 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
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Temperature on WASP-167 b
The equilibrium temperature of WASP-167 b is about 2,329 K (2,056 °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-167 b — one full orbit around WASP-167 — lasts 2.02 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.037 AU — closer to its star than Mercury is to the Sun.
How Was WASP-167 b Discovered?
WASP-167 b was discovered in 2017 using the transit method, with observations from Multiple Observatories.
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-167 b?
WASP-167 b is 1,381.4 light-years (423.6 parsecs) from Earth. Light arriving here tonight left the planet about 1,381 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 24,312,640 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-167 b scores 0.05, ranking #5,262 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-167
WASP-167
- Spectral type
- F1 V
- Surface temperature
- 7,000 K (Sun: 5,772 K)
- Mass
- 1.59 M☉
- Radius
- 1.79 R☉
- Age
- 1.3 billion years (Sun: 4.6)
Planetary System
WASP-167 b is the only planet known to orbit WASP-167 so far.
WASP-167 b — Complete Data
| Radius | 17.710 Earth radii (1.580 Jupiter radii) |
|---|---|
| Mass | 2,542.64 Earth masses (8.000 Jupiter masses) |
| Orbital period | 2.02 days |
| Orbital distance | 0.037 AU |
| Equilibrium temperature | 2,329 K (2,056 °C) |
| Earth Similarity Index | 0.05 |
| Distance from Earth | 1,381.4 light-years (423.6 parsecs) |
| Constellation | Centaurus |
| Discovery method | Transit |
| Discovery facility | Multiple Observatories |
| Discovery year | 2017 |
Data: NASA Exoplanet Archive, last updated 2017-07-24. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-167 b
Is WASP-167 b habitable?
No — WASP-167 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is WASP-167 b?
WASP-167 b is about 1,381 light-years from Earth in the constellation Centaurus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 24,312,640 years to get there.
How big is WASP-167 b compared to Earth?
WASP-167 b has 17.71 times the radius of Earth and about 2,543 times its mass.
How long is a year on WASP-167 b?
One orbit around WASP-167 takes 2.0 Earth days — short enough that 181 of its years would fit into one Earth year.
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