Exoplanet · gas giant
GJ 504 b
GJ 504 b is a gas giant orbiting the star GJ 504. It was discovered in 2013 by the Imaging method.
| Host star | GJ 504 |
|---|---|
| Distance | 57.2 light-years (17.5 pc) |
| Orbital radius | 43.5 AU |
| Radius | 12.1 R⊕ · 1.08 R♃ |
| Mass | 1,270 M⊕ · 4 M♃ |
| Density | 3.94 g/cm³ |
| Surface gravity | 8.67 × Earth |
| Equilibrium temperature | 510 K (237 °C) |
| Stellar flux received | 0.0011 × Earth |
| Discovery method | Imaging |
| Discovery year | 2013 |
| Discovered by | Subaru Telescope |
Habitable zone
Beyond the habitable zone: it receives only %0.11 of the light the Earth does, a frozen world.
Its star in the sky
In the planet's sky its star is a disc 0.015° across: 0.029 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.19). Visible from the whole Northern Hemisphere and south to latitude 81° S. It stands highest at midnight in April, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1969. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.