Exoplanet · gas giant
HAT-P-2 c
HAT-P-2 c is a gas giant orbiting the star Hunor. Its year lasts 8,500 Earth days. It was discovered in 2023 by the Radial Velocity method.
| Host star | Hunor |
|---|---|
| Distance | 416.7 light-years (127.8 pc) |
| Orbital period | 23.3 years |
| Eccentricity | 0.370 |
| Radius | 12.4 R⊕ · 1.11 R♃ |
| Mass | 3,400 M⊕ · 10.7 M♃ |
| Density | 9.8 g/cm³ |
| Surface gravity | 22.1 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2023 |
| Discovered by | Multiple Observatories |
In the sky
Too faint for the naked eye (magnitude 8.72); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 49° S. North of latitude 49° N 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 1609. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.4 million years.
Planets in the same system
- HAT-P-2 b 5.63-day orbit · 10.7 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.