WASP-54 b
WASP-54 b is a hot Jupiter orbiting WASP-54 in the constellation Virgo. It lies about 820 light-years from Earth and was discovered in 2012 using the transit method.
How Big Is WASP-54 b?
WASP-54 b has a radius of 17.71 times that of Earth, or 1.58 times the radius of Jupiter. Its mass is 188 times that of Earth.
Is WASP-54 b in the Habitable Zone?
The position of WASP-54 b relative to the habitable zone of WASP-54 cannot be precisely determined from the available orbital data.
Habitable zone of WASP-54: 1.444–3.375 AU (conservative: 1.828–3.200 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 ›
Orbit and Year Length
A year on WASP-54 b — one full orbit around WASP-54 — lasts 3.69 Earth days, shorter than Mercury's 88-day year. Its orbit is mildly elliptical (eccentricity 0.07).
How Was WASP-54 b Discovered?
WASP-54 b was discovered in 2012 using the transit method, with observations from SuperWASP.
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-54 b?
WASP-54 b is 819.6 light-years (251.3 parsecs) from Earth. Light arriving here tonight left the planet around the year 1207. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 14,424,960 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-54 b scores 0.05, ranking #5,256 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-54
WASP-54 b belongs to a system of 2 stars; it orbits WASP-54.
WASP-54
- Surface temperature
- 6,100 K (Sun: 5,772 K)
- Mass
- 1.08 M☉
- Radius
- 1.76 R☉
Planetary System
WASP-54 b is the only planet known to orbit WASP-54 so far.
WASP-54 b — Complete Data
| Radius | 17.710 Earth radii (1.580 Jupiter radii) |
|---|---|
| Mass | 187.52 Earth masses (0.590 Jupiter masses) |
| Orbital period | 3.69 days |
| Eccentricity | 0.070 |
| Earth Similarity Index | 0.05 |
| Distance from Earth | 819.6 light-years (251.3 parsecs) |
| Constellation | Virgo |
| Discovery method | Transit |
| Discovery facility | SuperWASP |
| Discovery year | 2012 |
Data: NASA Exoplanet Archive, last updated 2018-04-25. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-54 b
Is WASP-54 b habitable?
WASP-54 b is not known to orbit within the habitable zone of WASP-54, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is WASP-54 b?
WASP-54 b is about 820 light-years from Earth in the constellation Virgo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 14,424,960 years to get there.
How big is WASP-54 b compared to Earth?
WASP-54 b has 17.71 times the radius of Earth and about 188 times its mass.
How long is a year on WASP-54 b?
One orbit around WASP-54 takes 3.7 Earth days — short enough that 99 of its years would fit into one Earth year.
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