Exoplanet · gas giant
HD 135344 A b
HD 135344 A b is a gas giant orbiting the star HD 135344 A. It was discovered in 2025 by the Imaging method.
| Host star | HD 135344 A |
|---|---|
| Distance | 461.8 light-years (141.6 pc) |
| Orbital radius | 16.5 AU |
| Eccentricity | 0.500 |
| Radius | 16.3 R⊕ · 1.45 R♃ |
| Mass | 3,180 M⊕ · 10 M♃ |
| Density | 4.07 g/cm³ |
| Surface gravity | 12 × Earth |
| Equilibrium temperature | 1,585 K (1,312 °C) |
| Stellar flux received | 0.061 × Earth |
| Discovery method | Imaging |
| Discovery year | 2025 |
| Discovered by | Paranal Observatory |
Habitable zone
Beyond the habitable zone: it receives only %6.1 of the light the Earth does, a frozen world.
Its star in the sky
In the planet's sky its star is a disc 0.048° across: 0.091 times the Sun as we see it from Earth.
In the sky
Too faint for the naked eye (magnitude 7.78); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 53° N. South of latitude 53° S 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 1564. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 8.2 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.