Exoplanet · gas giant
Gaia-5 b
Gaia-5 b is a gas giant orbiting the star Gaia-5. Its year lasts 359 Earth days. It was discovered in 2025 by the Astrometry method.
| Host star | Gaia-5 |
|---|---|
| Distance | 134.3 light-years (41.2 pc) |
| Orbital period | 359 days |
| Eccentricity | 0.642 |
| Radius | 12.1 R⊕ · 1.08 R♃ |
| Mass | 6,630 M⊕ · 20.9 M♃ |
| Density | 20.6 g/cm³ |
| Surface gravity | 45.3 × Earth |
| Discovery method | Astrometry |
| Discovery year | 2025 |
| Discovered by | European Space Agency (ESA) Gaia Satellite |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.24. Visible from the whole Northern Hemisphere and south to latitude 48° S. North of latitude 48° N it never sets. It stands highest at midnight in July, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1892. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.