Exoplanet · gas giant
HIP 34222 b
HIP 34222 b is a gas giant orbiting the star HIP 34222. Its year lasts 160 Earth days. It was discovered in 2021 by the Radial Velocity method.
| Host star | HIP 34222 |
|---|---|
| Distance | 74.5 light-years (22.8 pc) |
| Orbital period | 160 days |
| Orbital radius | 0.492 AU |
| Eccentricity | 0.305 |
| Radius | 13.9 R⊕ · 1.24 R♃ |
| Mass (minimum) | 264 M⊕ · 0.83 M♃ |
| Density | 0.54 g/cm³ |
| Equilibrium temperature | 219 K (-54 °C) |
| Stellar flux received | 0.383 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2021 |
| Discovered by | Cerro Tololo Inter-American 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 0.67° 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 10.14. Visible from the whole Northern Hemisphere and south to latitude 63° S. North of latitude 63° N it never sets. It stands highest at midnight in January, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1952. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.