Exoplanet · gas giant
HD 102272 b
HD 102272 b is a gas giant orbiting the star HD 102272. Its year lasts 128 Earth days. It was discovered in 2008 by the Radial Velocity method.
| Host star | HD 102272 |
|---|---|
| Distance | 1,132 light-years (347.1 pc) |
| Orbital period | 128 days |
| Orbital radius | 0.51 AU |
| Eccentricity | 0.050 |
| Radius | 12.9 R⊕ · 1.15 R♃ |
| Mass (minimum) | 1,570 M⊕ · 4.94 M♃ |
| Density | 4.02 g/cm³ |
| Equilibrium temperature | 1,038 K (765 °C) |
| Stellar flux received | 176 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2008 |
| Discovered by | McDonald Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 176 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 11° across: 20 times the Sun as we see it from Earth.
In the sky
Too faint for the naked eye (magnitude 8.69); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 76° S. North of latitude 76° N it never sets. It stands highest at midnight in March, the best time to observe it.
Light's journey
The light you see tonight set out around the year 894. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 20 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.