Exoplanet · gas giant
TWA 7 b
TWA 7 b is a gas giant orbiting the star TWA 7. It was discovered in 2025 by the Imaging method.
| Host star | TWA 7 |
|---|---|
| Distance | 110.9 light-years (34.0 pc) |
| Orbital radius | 52 AU |
| Radius | 12.7 R⊕ · 1.13 R♃ |
| Mass | 108 M⊕ · 0.34 M♃ |
| Density | 0.29 g/cm³ |
| Surface gravity | 0.67 × Earth |
| Equilibrium temperature | 316 K (43 °C) |
| Stellar flux received | 0 × Earth |
| Discovery method | Imaging |
| Discovery year | 2025 |
| Discovered by | James Webb Space Telescope (JWST) |
Habitable zone
Beyond the habitable zone: it receives only %0 of the light the Earth does, a frozen world.
Its star in the sky
In the planet's sky its star is a disc 0.0094° across: 0.018 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 11.06. Visible from the whole Southern Hemisphere and north to latitude 56° N. South of latitude 56° S it never sets. It stands highest at midnight in February, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1915. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.0 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.