Exoplanet · gas giant
HD 7924 d
HD 7924 d is a gas giant orbiting the star HD 7924. Its year lasts 24.5 Earth days. It was discovered in 2015 by the Radial Velocity method.
| Host star | HD 7924 |
|---|---|
| Distance | 55.4 light-years (17.0 pc) |
| Orbital period | 24.5 days |
| Orbital radius | 0.155 AU |
| Eccentricity | 0.210 |
| Mass | 1,570 M⊕ · 4.93 M♃ |
| Equilibrium temperature | 499 K (226 °C) |
| Stellar flux received | 15.2 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2015 |
| Discovered by | W. M. Keck Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 15.2 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 2.7° across: 5 times the Sun as we see it from Earth.
In the sky
Too faint for the naked eye (magnitude 7.17); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 13° S. North of latitude 13° N it never sets.
Light's journey
The light you see tonight set out around the year 1971. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 983 thousand years.
Planets in the same system
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.