Exoplanet · gas giant
GPX-1 b
GPX-1 b is a gas giant orbiting the star GPX-1. Its year lasts 1.74 Earth days. It was discovered in 2021 by the Transit method.
| Host star | GPX-1 |
|---|---|
| Distance | 2,136 light-years (655.0 pc) |
| Orbital period | 41.9 hours |
| Orbital radius | 0.0338 AU |
| Eccentricity | 0.000 |
| Radius | 16.5 R⊕ · 1.47 R♃ |
| Mass | 6,260 M⊕ · 19.7 M♃ |
| Density | 8.22 g/cm³ |
| Surface gravity | 23.1 × Earth |
| Equilibrium temperature | 2,300 K (2,027 °C) |
| Stellar flux received | 4,650 × Earth |
| Discovery method | Transit |
| Discovery year | 2021 |
| Discovered by | Acton Sky Portal Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 4,650 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 24° across: 45 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 12.32. Visible from the whole Northern Hemisphere and south to latitude 34° S. North of latitude 34° 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 111 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 38 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.