Confirmed exoplanet · Database record + computed analysis
HD 100546 b
A confirmed world orbiting HD 100546, 357.7 light-years away.
A gas giant
77.34 Earth radii, Jupiter-class (Jupiter is 11.2). At only 2701.5 Earth masses for that size, it must be substantially gas or volatile ices: puffy, not rocky.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about -178 °C. Deep-freeze territory, colder than Antarctica's worst. It receives only 0.01 times Earth's starlight.
Its sun
Its star is hotter than the Sun (10,500 K, B9 Vne), burning brighter and faster.
How far is that, really?
At 358 light-years, tonight's light from this system left it around the year 1668. A Voyager-speed probe would need roughly 6,328,968 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 2014 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.