Exoplanet · gas giant
WASP-47 c
WASP-47 c is a gas giant orbiting the star WASP-47. Its year lasts 590 Earth days. It was discovered in 2015 by the Radial Velocity method.
| Host star | WASP-47 |
|---|---|
| Distance | 863.6 light-years (264.8 pc) |
| Orbital period | 590 days |
| Orbital radius | 1.39 AU |
| Eccentricity | 0.264 |
| Mass | 447 M⊕ · 1.41 M♃ |
| Equilibrium temperature | 247 K (-26 °C) |
| Stellar flux received | 0.549 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2015 |
| Discovered by | La Silla Observatory |
Habitable zone
Inside its star's habitable zone: it receives enough light for liquid water to exist on its surface under a suitable atmosphere.
Its star in the sky
In the planet's sky its star is a disc 0.44° across: 0.83 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 11.94. Visible from the whole Southern Hemisphere and north to latitude 78° N. South of latitude 78° S it never sets. It stands highest at midnight in August, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1162. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 15 million years.
Planets in the same system
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.