WASP-132 b
WASP-132 b is a hot Jupiter orbiting the K4 V star WASP-132 in the constellation Lupus. It lies about 401 light-years from Earth and was discovered in 2016 using the transit method.
How Big Is WASP-132 b?
WASP-132 b has a radius of 10.10 times that of Earth, or 0.90 times the radius of Jupiter. Its mass is 136 times that of Earth, giving it a density of 0.73 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is WASP-132 b in the Habitable Zone?
WASP-132 b orbits inside the inner edge of the habitable zone of WASP-132. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of WASP-132: 0.410–1.003 AU (conservative: 0.519–0.951 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Temperature on WASP-132 b
The equilibrium temperature of WASP-132 b is about 682 K (409 °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. It receives 58.50 times the stellar energy that Earth gets from the Sun.
Orbit and Year Length
A year on WASP-132 b — one full orbit around WASP-132 — lasts 7.13 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.067 AU — closer to its star than Mercury is to the Sun. Its orbit is nearly circular (eccentricity 0.016).
How Was WASP-132 b Discovered?
WASP-132 b was discovered in 2016 using the transit method, with observations from SuperWASP-South.
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-132 b?
WASP-132 b is 400.9 light-years (122.9 parsecs) from Earth. Light arriving here tonight left the planet around the year 1626. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 7,055,840 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-132 b scores 0.10, ranking #4,400 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-132
WASP-132
- Spectral type
- K4 V
- Surface temperature
- 4,686 K (Sun: 5,772 K)
- Mass
- 0.79 M☉
- Radius
- 0.76 R☉
- Luminosity
- 0.2660 L☉
- Age
- 7.2 billion years (Sun: 4.6)
The WASP-132 Planetary System
WASP-132 b is one of 3 known planets in the WASP-132 system. Its siblings:
- WASP-132 c (Super Earth)
- WASP-132 d (Cold Gas Giant)
WASP-132 b — Complete Data
| Radius | 10.099 Earth radii (0.901 Jupiter radii) |
|---|---|
| Mass | 136.03 Earth masses (0.428 Jupiter masses) |
| Density | 0.73 g/cm³ (Earth: 5.51) |
| Orbital period | 7.13 days |
| Orbital distance | 0.067 AU |
| Eccentricity | 0.016 |
| Equilibrium temperature | 682 K (409 °C) |
| Stellar irradiation | 58.50× Earth |
| Earth Similarity Index | 0.10 |
| Distance from Earth | 400.9 light-years (122.9 parsecs) |
| Constellation | Lupus |
| Discovery method | Transit |
| Discovery facility | SuperWASP-South |
| Discovery year | 2016 |
Data: NASA Exoplanet Archive, last updated 2025-01-29. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-132 b
Is WASP-132 b habitable?
No — WASP-132 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is WASP-132 b?
WASP-132 b is about 401 light-years from Earth in the constellation Lupus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 7,055,840 years to get there.
How big is WASP-132 b compared to Earth?
WASP-132 b has 10.10 times the radius of Earth and about 136 times its mass.
How long is a year on WASP-132 b?
One orbit around WASP-132 takes 7.1 Earth days — short enough that 51 of its years would fit into one Earth year.
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