WASP-184 b
WASP-184 b is a hot Jupiter orbiting the G0 V star WASP-184 in the constellation Centaurus. It lies about 2,163 light-years from Earth and was discovered in 2019 using the transit method.
How Big Is WASP-184 b?
WASP-184 b has a radius of 14.91 times that of Earth, or 1.33 times the radius of Jupiter. Its mass is 181 times that of Earth, giving it a density of 0.32 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is WASP-184 b in the Habitable Zone?
WASP-184 b orbits inside the inner edge of the habitable zone of WASP-184. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of WASP-184: 1.317–3.087 AU (conservative: 1.669–2.927 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-184 b
The equilibrium temperature of WASP-184 b is about 1,480 K (1,207 °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-184 b — one full orbit around WASP-184 — lasts 5.18 Earth days, shorter than Mercury's 88-day year. It orbits at an average distance of 0.063 AU — closer to its star than Mercury is to the Sun.
How Was WASP-184 b Discovered?
WASP-184 b was discovered in 2019 using the transit method, with observations from WASP-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-184 b?
WASP-184 b is 2,163.2 light-years (663.2 parsecs) from Earth. Light arriving here tonight left the planet about 2,163 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 38,072,320 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-184 b scores 0.06, ranking #5,119 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-184
WASP-184
- Spectral type
- G0 V
- Surface temperature
- 6,000 K (Sun: 5,772 K)
- Mass
- 1.23 M☉
- Radius
- 1.65 R☉
- Age
- 4.7 billion years (Sun: 4.6)
Planetary System
WASP-184 b is the only planet known to orbit WASP-184 so far.
WASP-184 b — Complete Data
| Radius | 14.908 Earth radii (1.330 Jupiter radii) |
|---|---|
| Mass | 181.16 Earth masses (0.570 Jupiter masses) |
| Density | 0.32 g/cm³ (Earth: 5.51) |
| Orbital period | 5.18 days |
| Orbital distance | 0.063 AU |
| Equilibrium temperature | 1,480 K (1,207 °C) |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 2,163.2 light-years (663.2 parsecs) |
| Constellation | Centaurus |
| Discovery method | Transit |
| Discovery facility | WASP-South |
| Discovery year | 2019 |
Data: NASA Exoplanet Archive, last updated 2019-10-02. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-184 b
Is WASP-184 b habitable?
No — WASP-184 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is WASP-184 b?
WASP-184 b is about 2,163 light-years from Earth in the constellation Centaurus. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 38,072,320 years to get there.
How big is WASP-184 b compared to Earth?
WASP-184 b has 14.91 times the radius of Earth and about 181 times its mass.
How long is a year on WASP-184 b?
One orbit around WASP-184 takes 5.2 Earth days — short enough that 70 of its years would fit into one Earth year.
Explore WASP-184 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
