Exoplanet · gas giant
eps Eri b
eps Eri b is a gas giant orbiting the star Ran. Its year lasts 2,680 Earth days. It was discovered in 2000 by the Radial Velocity method.
| Host star | Ran |
|---|---|
| Distance | 10.4 light-years (3.20 pc) |
| Orbital period | 7.34 years |
| Orbital radius | 3.53 AU |
| Eccentricity | 0.060 |
| Radius | 13.8 R⊕ · 1.23 R♃ |
| Mass | 318 M⊕ · 1 M♃ |
| Density | 0.665 g/cm³ |
| Surface gravity | 1.67 × Earth |
| Equilibrium temperature | 112 K (-161 °C) |
| Stellar flux received | 0.0306 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2000 |
| Discovered by | Multiple Observatories |
Habitable zone
Beyond the habitable zone: it receives only %3.1 of the light the Earth does, a frozen world.
Its star in the sky
In the planet's sky its star is a disc 0.11° across: 0.22 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.72). Visible from the whole Southern Hemisphere and north to latitude 81° N. It stands highest at midnight in November, the best time to observe it.
Light's journey
The light you see tonight set out around the year 2016. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 185 thousand years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.