WASP-100 b
WASP-100 b is a hot Jupiter orbiting WASP-100 in the constellation Reticulum. It lies about 1,189 light-years from Earth and was discovered in 2014 using the transit method.
How Big Is WASP-100 b?
WASP-100 b has a radius of 14.91 times that of Earth, or 1.33 times the radius of Jupiter. Its mass is 400 times that of Earth.
Is WASP-100 b in the Habitable Zone?
The position of WASP-100 b relative to the habitable zone of WASP-100 cannot be precisely determined from the available orbital data.
Habitable zone of WASP-100: 1.574–3.636 AU (conservative: 1.994–3.447 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-100 b — one full orbit around WASP-100 — lasts 2.85 Earth days, shorter than Mercury's 88-day year.
How Was WASP-100 b Discovered?
WASP-100 b was discovered in 2014 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-100 b?
WASP-100 b is 1,188.5 light-years (364.4 parsecs) from Earth. Light arriving here tonight left the planet about 1,189 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 20,917,600 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-100 b scores 0.06, ranking #5,132 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-100
WASP-100 b belongs to a system of 2 stars; it orbits WASP-100.
WASP-100
- Surface temperature
- 6,900 K (Sun: 5,772 K)
- Mass
- 0.77 M☉
- Radius
- 1.57 R☉
Planetary System
WASP-100 b is the only planet known to orbit WASP-100 so far.
WASP-100 b — Complete Data
| Radius | 14.908 Earth radii (1.330 Jupiter radii) |
|---|---|
| Mass | 400.47 Earth masses (1.260 Jupiter masses) |
| Orbital period | 2.85 days |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 1,188.5 light-years (364.4 parsecs) |
| Constellation | Reticulum |
| Discovery method | Transit |
| Discovery facility | SuperWASP |
| Discovery year | 2014 |
Data: NASA Exoplanet Archive, last updated 2018-04-25. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-100 b
Is WASP-100 b habitable?
WASP-100 b is not known to orbit within the habitable zone of WASP-100, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is WASP-100 b?
WASP-100 b is about 1,189 light-years from Earth in the constellation Reticulum. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 20,917,600 years to get there.
How big is WASP-100 b compared to Earth?
WASP-100 b has 14.91 times the radius of Earth and about 400 times its mass.
How long is a year on WASP-100 b?
One orbit around WASP-100 takes 2.8 Earth days — short enough that 128 of its years would fit into one Earth year.
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