Confirmed exoplanet · Database record + computed analysis
HD 135344 A b
A confirmed world orbiting HD 135344 A, 461.8 light-years away.
A gas giant
16.25 Earth radii, Jupiter-class (Jupiter is 11.2).
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 1,312 °C. Hot enough to melt copper; any surface would glow. It receives only 0.06 times Earth's starlight.
Its sun
Its star is hotter than the Sun (9,540 K, A0 V), burning brighter and faster. The system holds 2 stars, so its skies have more than one sun.
How far is that, really?
At 462 light-years, tonight's light from this system left it around the year 1564. A Voyager-speed probe would need roughly 8,170,813 years to get there.
How we found it
It was directly imaged, one of the rare planets actually photographed as its own point of light, possible only for young, hot, wide-orbiting giants. The discovery was announced in 2025 from Paranal Observatory.
Everything above is computed from the archive’s measured values for this planet. Where a quantity is missing, the statement is omitted rather than guessed.
About this record
The measured values come from the NASA Exoplanet Archive, and any missing value has not been determined yet; the Atlas never fills gaps with guesses. More standout worlds: Proxima b, TRAPPIST-1e, K2-18 b, 55 Cancri e, and the detection methods that found them all.