Exoplanet · gas giant
HD 148427 b
HD 148427 b is a gas giant orbiting the star Timir. Its year lasts 332 Earth days. It was discovered in 2009 by the Radial Velocity method.
| Host star | Timir |
|---|---|
| Distance | 232.7 light-years (71.3 pc) |
| Orbital period | 332 days |
| Orbital radius | 1.11 AU |
| Eccentricity | 0.120 |
| Radius | 13.7 R⊕ · 1.22 R♃ |
| Mass | 381 M⊕ · 1.2 M♃ |
| Density | 0.815 g/cm³ |
| Surface gravity | 2.03 × Earth |
| Equilibrium temperature | 452 K (179 °C) |
| Stellar flux received | 4.89 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2009 |
| Discovered by | Lick Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 4.89 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 1.9° across: 3.5 times the Sun as we see it from Earth.
In the sky
Too faint for the naked eye (magnitude 6.89); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 77° N. South of latitude 77° S it never sets. It stands highest at midnight in May, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1793. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.1 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.