Exoplanet · gas giant
Kepler-68 d
Kepler-68 d is a gas giant orbiting the star Kepler-68. Its year lasts 633 Earth days. It was discovered in 2013 by the Radial Velocity method.
| Host star | Kepler-68 |
|---|---|
| Distance | 470.2 light-years (144.2 pc) |
| Orbital period | 633 days |
| Orbital radius | 1.47 AU |
| Eccentricity | 0.102 |
| Radius | 13.9 R⊕ · 1.24 R♃ |
| Mass | 267 M⊕ · 0.84 M♃ |
| Density | 0.546 g/cm³ |
| Surface gravity | 1.38 × Earth |
| Equilibrium temperature | 261 K (-12 °C) |
| Stellar flux received | 0.789 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2013 |
| Discovered by | W. M. Keck Observatory |
Habitable zone
Inside its star's habitable zone: it receives enough light for liquid water to exist on its surface under a suitable atmosphere.
Its star in the sky
In the planet's sky its star is a disc 0.46° across: 0.86 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 10.15. Visible from the whole Northern Hemisphere and south to latitude 41° S. North of latitude 41° N it never sets. It stands highest at midnight in July, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1556. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 8.3 million years.
Planets in the same system
- Kepler-68 b 5.4-day orbit · 2.36 R⊕
- Kepler-68 c 9.61-day orbit · 0.979 R⊕
- Kepler-68 e 3,460-day orbit · 11.2 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.