Exoplanet · gas giant
ROXs 12 b
ROXs 12 b is a gas giant orbiting the star ROXs 12. It was discovered in 2013 by the Imaging method.
| Host star | ROXs 12 |
|---|---|
| Distance | 445.7 light-years (136.7 pc) |
| Orbital radius | 210 AU |
| Eccentricity | 0.830 |
| Radius | 12.2 R⊕ · 1.09 R♃ |
| Mass | 5,090 M⊕ · 16 M♃ |
| Density | 15.4 g/cm³ |
| Surface gravity | 34.2 × Earth |
| Equilibrium temperature | 13 K (-260 °C) |
| Stellar flux received | 0 × Earth |
| Discovery method | Imaging |
| Discovery year | 2013 |
| Discovered by | W. M. Keck 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 0.0027° across: 0.0051 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 14.76. Visible from the whole Southern Hemisphere and north to latitude 65° N. South of latitude 65° 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.