Exoplanet · super-Earth
GJ 676 A d
GJ 676 A d is a super-Earth orbiting the star GJ 676 A. Its year lasts 3.6 Earth days. It was discovered in 2012 by the Radial Velocity method.
| Host star | GJ 676 A |
|---|---|
| Distance | 52.3 light-years (16.0 pc) |
| Orbital period | 3.6 days |
| Orbital radius | 0.039 AU |
| Eccentricity | 0.192 |
| Radius | 1.78 R⊕ · 0.159 R♃ |
| Mass (minimum) | 3.81 M⊕ · 0.012 M♃ |
| Density | 3.72 g/cm³ |
| Equilibrium temperature | 757 K (484 °C) |
| Stellar flux received | 59.6 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2012 |
| Discovered by | La Silla Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 59.6 times the light the Earth does, too hot to keep liquid water on its surface.
Its star in the sky
In the planet's sky its star is a disc 9.4° across: 18 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 9.58. Visible from the whole Southern Hemisphere and north to latitude 38° N. South of latitude 38° S it never sets. It stands highest at midnight in June, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1974. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 927 thousand years.
Planets in the same system
- GJ 676 A e 35.5-day orbit · 2.47 R⊕
- GJ 676 A b 1,050-day orbit · 12.8 R⊕
- GJ 676 A c 13,900-day orbit · 12.3 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.