Exoplanet · gas giant
HIP 79431 b
HIP 79431 b is a gas giant orbiting the star Sharjah. Its year lasts 112 Earth days. It was discovered in 2009 by the Radial Velocity method.
| Host star | Sharjah |
|---|---|
| Distance | 47.4 light-years (14.5 pc) |
| Orbital period | 112 days |
| Orbital radius | 0.36 AU |
| Eccentricity | 0.290 |
| Radius | 13.4 R⊕ · 1.2 R♃ |
| Mass (minimum) | 667 M⊕ · 2.1 M♃ |
| Density | 1.52 g/cm³ |
| Equilibrium temperature | 177 K (-96 °C) |
| Stellar flux received | 0.218 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2009 |
| Discovered by | W. M. Keck Observatory |
Habitable zone
Beyond the habitable zone: it receives only %22 of the light the Earth does, a frozen world.
Its star in the sky
In the planet's sky its star is a disc 0.71° across: 1.3 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 11.34. Visible from the whole Southern Hemisphere and north to latitude 71° N. South of latitude 71° S it never sets. It stands highest at midnight in May, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1979. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 841 thousand years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.