WASP-74 b
WASP-74 b is a hot Jupiter orbiting WASP-74 in the constellation Aquila. It lies about 487 light-years from Earth and was discovered in 2015 using the transit method.
How Big Is WASP-74 b?
WASP-74 b has a radius of 15.24 times that of Earth, or 1.36 times the radius of Jupiter. Its mass is 229 times that of Earth.
Is WASP-74 b in the Habitable Zone?
The position of WASP-74 b relative to the habitable zone of WASP-74 cannot be precisely determined from the available orbital data.
Habitable zone of WASP-74: 1.131–2.650 AU (conservative: 1.432–2.512 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-74 b — one full orbit around WASP-74 — lasts 2.14 Earth days, shorter than Mercury's 88-day year.
How Was WASP-74 b Discovered?
WASP-74 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-74 b?
WASP-74 b is 486.7 light-years (149.2 parsecs) from Earth. Light arriving here tonight left the planet around the year 1540. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 8,565,920 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-74 b scores 0.06, ranking #5,144 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: WASP-74
WASP-74
- Surface temperature
- 5,990 K (Sun: 5,772 K)
- Mass
- 0.98 M☉
- Radius
- 1.42 R☉
Planetary System
WASP-74 b is the only planet known to orbit WASP-74 so far.
WASP-74 b — Complete Data
| Radius | 15.244 Earth radii (1.360 Jupiter radii) |
|---|---|
| Mass | 228.84 Earth masses (0.720 Jupiter masses) |
| Orbital period | 2.14 days |
| Earth Similarity Index | 0.06 |
| Distance from Earth | 486.7 light-years (149.2 parsecs) |
| Constellation | Aquila |
| Discovery method | Transit |
| Discovery facility | SuperWASP |
| Discovery year | 2015 |
Data: NASA Exoplanet Archive, last updated 2018-04-25. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About WASP-74 b
Is WASP-74 b habitable?
WASP-74 b is not known to orbit within the habitable zone of WASP-74, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is WASP-74 b?
WASP-74 b is about 487 light-years from Earth in the constellation Aquila. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 8,565,920 years to get there.
How big is WASP-74 b compared to Earth?
WASP-74 b has 15.24 times the radius of Earth and about 229 times its mass.
How long is a year on WASP-74 b?
One orbit around WASP-74 takes 2.1 Earth days — short enough that 171 of its years would fit into one Earth year.
Explore WASP-74 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.
