Exoplanet · gas giant
HD 1690 b
HD 1690 b is a gas giant orbiting the star HD 1690. Its year lasts 533 Earth days. It was discovered in 2010 by the Radial Velocity method.
| Host star | HD 1690 |
|---|---|
| Distance | 2,455 light-years (752.6 pc) |
| Orbital period | 533 days |
| Orbital radius | 1.36 AU |
| Eccentricity | 0.640 |
| Radius | 12.5 R⊕ · 1.12 R♃ |
| Mass (minimum) | 2,790 M⊕ · 8.79 M♃ |
| Density | 7.86 g/cm³ |
| Equilibrium temperature | 842 K (569 °C) |
| Stellar flux received | 17.9 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2010 |
| Discovered by | La Silla Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 17.9 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 8.5° across: 16 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 9.19. Visible from the whole Southern Hemisphere and north to latitude 82° N. It stands highest at midnight in September, the best time to observe it.
Light's journey
The light you see tonight set out around 430 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 44 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.