WASP-135 b
WASP-135 b is a hot Jupiter orbiting the G5 V star WASP-135 in the constellation Hercules. It lies about 973 light-years from Earth and was discovered in 2015 using the transit method.
How Big Is WASP-135 b?
WASP-135 b has a radius of 14.57 times that of Earth, or 1.30 times the radius of Jupiter. Its mass is 604 times that of Earth, giving it a density of 1.16 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is WASP-135 b in the Habitable Zone?
WASP-135 b orbits inside the inner edge of the habitable zone of WASP-135. So close to its star, surface conditions are far too hot for liquid water.
Habitable zone of WASP-135: 0.699–1.652 AU (conservative: 0.886–1.566 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-135 b — one full orbit around WASP-135 — lasts just 33.6 hours, shorter than Mercury's 88-day year. It orbits at an average distance of 0.024 AU — closer to its star than Mercury is to the Sun.
How Was WASP-135 b Discovered?
WASP-135 b was discovered in 2015 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-135 b?
WASP-135 b is 972.6 light-years (298.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1054. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 17,117,760 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-135 b scores 0.06, ranking #5,091 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-135
WASP-135
- Spectral type
- G5 V
- Surface temperature
- 5,675 K (Sun: 5,772 K)
- Mass
- 0.98 M☉
- Radius
- 0.96 R☉
- Age
- 0.6 billion years (Sun: 4.6)
Planetary System
WASP-135 b is the only planet known to orbit WASP-135 so far.
WASP-135 b — Complete Data
| Radius | 14.572 Earth radii (1.300 Jupiter radii) |
|---|---|
| Mass | 603.88 Earth masses (1.900 Jupiter masses) |
| Density | 1.16 g/cm³ (Earth: 5.51) |
| Orbital period | 1.40 days |
| Orbital distance | 0.024 AU |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 972.6 light-years (298.2 parsecs) |
| Constellation | Hercules |
| Discovery method | Transit |
| Discovery facility | SuperWASP |
| Discovery year | 2015 |
Data: NASA Exoplanet Archive, last updated 2015-12-02. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-135 b
Is WASP-135 b habitable?
No — WASP-135 b orbits too close to its star and is too hot for liquid water to exist on its surface.
How far away is WASP-135 b?
WASP-135 b is about 973 light-years from Earth in the constellation Hercules. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 17,117,760 years to get there.
How big is WASP-135 b compared to Earth?
WASP-135 b has 14.57 times the radius of Earth and about 604 times its mass.
How long is a year on WASP-135 b?
One orbit around WASP-135 takes 1.4 Earth days — short enough that 261 of its years would fit into one Earth year.
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