Exoplanet · gas giant
GJ 2126 b
GJ 2126 b is a gas giant orbiting the star GJ 2126. Its year lasts 273 Earth days. It was discovered in 2025 by the Radial Velocity method.
| Host star | GJ 2126 |
|---|---|
| Distance | 124.4 light-years (38.1 pc) |
| Orbital period | 273 days |
| Orbital radius | 0.71 AU |
| Eccentricity | 0.850 |
| Radius | 13.6 R⊕ · 1.21 R♃ |
| Mass (minimum) | 413 M⊕ · 1.3 M♃ |
| Density | 0.903 g/cm³ |
| Equilibrium temperature | 203 K (-70 °C) |
| Stellar flux received | 0.283 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2025 |
| Discovered by | La Silla Observatory |
Habitable zone
Beyond the habitable zone: it receives only %28 of the light the Earth does, a frozen world.
Its star in the sky
In the planet's sky its star is a disc 0.55° across: 1 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 10.70. Visible from the whole Southern Hemisphere and north to latitude 55° N. South of latitude 55° S it never sets. It stands highest at midnight in June, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1902. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.