WASP-107 b
WASP-107 b is a hot Jupiter orbiting WASP-107 in the constellation Virgo. It lies about 211 light-years from Earth and was discovered in 2017 using the transit method.
How Big Is WASP-107 b?
WASP-107 b has a radius of 10.48 times that of Earth, or 0.94 times the radius of Jupiter. Its mass is 33.0 times that of Earth, giving it a density of 0.16 g/cm³ — closer to gas planets like Jupiter (1.33 g/cm³).
Is WASP-107 b in the Habitable Zone?
The position of WASP-107 b relative to the habitable zone of WASP-107 cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on WASP-107 b — one full orbit around WASP-107 — lasts 5.72 Earth days, shorter than Mercury's 88-day year. Its orbit is mildly elliptical (eccentricity 0.05).
How Was WASP-107 b Discovered?
WASP-107 b was discovered in 2017 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-107 b?
WASP-107 b is 211.2 light-years (64.7 parsecs) from Earth. Light arriving here tonight left the planet around the year 1815. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 3,717,120 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-107 b scores 0.11, ranking #4,392 of 5,565 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-107
WASP-107
The WASP-107 Planetary System
WASP-107 b is one of 2 known planets in the WASP-107 system. Its siblings:
WASP-107 b — Complete Data
| Radius | 10.480 Earth radii (0.935 Jupiter radii) |
|---|---|
| Mass | 33.02 Earth masses (0.104 Jupiter masses) |
| Density | 0.16 g/cm³ (Earth: 5.51) |
| Orbital period | 5.72 days |
| Eccentricity | 0.052 |
| Earth Similarity Index | 0.11 |
| Distance from Earth | 211.2 light-years (64.7 parsecs) |
| Constellation | Virgo |
| Discovery method | Transit |
| Discovery facility | SuperWASP-South |
| Discovery year | 2017 |
Data: NASA Exoplanet Archive, last updated 2026-09-03. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-107 b
Is WASP-107 b habitable?
WASP-107 b is not known to orbit within the habitable zone of WASP-107, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is WASP-107 b?
WASP-107 b is about 211 light-years from Earth in the constellation Virgo. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 3,717,120 years to get there.
How big is WASP-107 b compared to Earth?
WASP-107 b has 10.48 times the radius of Earth and about 33.0 times its mass.
How long is a year on WASP-107 b?
One orbit around WASP-107 takes 5.7 Earth days — short enough that 64 of its years would fit into one Earth year.
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