Exoplanet · gas giant
HIP 39017 b
HIP 39017 b is a gas giant orbiting the star HIP 39017. Its year lasts 31,000 Earth days. It was discovered in 2024 by the Imaging method.
| Host star | HIP 39017 |
|---|---|
| Distance | 216.3 light-years (66.3 pc) |
| Orbital period | 84.9 years |
| Orbital radius | 22.1 AU |
| Eccentricity | 0.550 |
| Radius | 12 R⊕ · 1.07 R♃ |
| Mass | 7,500 M⊕ · 23.6 M♃ |
| Density | 23.9 g/cm³ |
| Surface gravity | 52.1 × Earth |
| Equilibrium temperature | 91 K (-182 °C) |
| Stellar flux received | 0.0115 × Earth |
| Discovery method | Imaging |
| Discovery year | 2024 |
| Discovered by | Multiple Observatories |
Habitable zone
Beyond the habitable zone: it receives only %1.2 of the light the Earth does, a frozen world.
Its star in the sky
In the planet's sky its star is a disc 0.037° across: 0.069 times the Sun as we see it from Earth.
In the sky
Too faint for the naked eye (magnitude 6.98); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 86° N. 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 1810. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.