Exoplanet · gas giant
HIP 78530 b
HIP 78530 b is a gas giant orbiting the star HIP 78530. It was discovered in 2010 by the Imaging method.
| Host star | HIP 78530 |
|---|---|
| Distance | 446.1 light-years (136.8 pc) |
| Orbital radius | 740 AU |
| Radius | 12 R⊕ · 1.07 R♃ |
| Mass | 7,300 M⊕ · 23 M♃ |
| Density | 23.2 g/cm³ |
| Surface gravity | 50.7 × Earth |
| Equilibrium temperature | 2,700 K (2,427 °C) |
| Stellar flux received | 0 × Earth |
| Discovery method | Imaging |
| Discovery year | 2010 |
| Discovered by | Gemini Observatory |
Habitable zone
Beyond the habitable zone: it receives only %0 of the light the Earth does, a frozen world.
Its star in the sky
In the planet's sky its star is a disc 0.0015° across: 0.0028 times the Sun as we see it from Earth.
In the sky
Too faint for the naked eye (magnitude 7.19); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 68° N. South of latitude 68° 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 1580. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.9 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.