Exoplanet · gas giant
HAT-P-47 b
HAT-P-47 b is a gas giant orbiting the star HAT-P-47. Its year lasts 4.73 Earth days. It was discovered in 2026 by the Transit method.
| Host star | HAT-P-47 |
|---|---|
| Distance | 920.1 light-years (282.1 pc) |
| Orbital period | 4.73 days |
| Radius | 14.7 R⊕ · 1.31 R♃ |
| Mass | 65.5 M⊕ · 0.206 M♃ |
| Density | 0.113 g/cm³ |
| Surface gravity | 0.302 × Earth |
| Equilibrium temperature | 1,605 K (1,332 °C) |
| Stellar flux received | 380 × Earth |
| Discovery method | Transit |
| Discovery year | 2026 |
| Discovered by | Transiting Exoplanet Survey Satellite (TESS) |
Habitable zone
Inside the inner edge of the habitable zone: it receives 380 times the light the Earth does, too hot to keep liquid water on its surface.
In the sky
A telescope is needed to see it: its apparent magnitude is 10.67. Visible from the whole Northern Hemisphere and south to latitude 60° S. North of latitude 60° N it never sets. It stands highest at midnight in October, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1106. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 16 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.