Exoplanet · gas giant
IC 4651 9122 b
IC 4651 9122 b is a gas giant orbiting the star IC 4651 9122. Its year lasts 734 Earth days. It was discovered in 2018 by the Radial Velocity method.
| Host star | IC 4651 9122 |
|---|---|
| Distance | 2,803 light-years (859.3 pc) |
| Orbital period | 2.01 years |
| Orbital radius | 2.04 AU |
| Eccentricity | 0.180 |
| Radius | 12.7 R⊕ · 1.13 R♃ |
| Mass (minimum) | 2,000 M⊕ · 6.3 M♃ |
| Density | 5.37 g/cm³ |
| Equilibrium temperature | 513 K (240 °C) |
| Stellar flux received | 10.4 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2018 |
| Discovered by | La Silla Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 10.4 times the light the Earth does, too hot to keep liquid water on its surface.
Its star in the sky
In the planet's sky its star is a disc 2.7° across: 5 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 11.01. Visible from the whole Southern Hemisphere and north to latitude 40° N. South of latitude 40° S it never sets. It stands highest at midnight in June, the best time to observe it.
Light's journey
The light you see tonight set out around 778 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 50 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.