Confirmed exoplanet · Database record + computed analysis
HD 112300 b
A confirmed world orbiting HD 112300, 202.5 light-years away.
A gas giant
12.20 Earth radii, Jupiter-class (Jupiter is 11.2). With 5031.2 Earth masses packed into that size, its density points to rock and iron rather than gas.
The orbit
Its year takes 467 Earth days (1.3 Earth years). The orbit is strongly stretched (eccentricity 0.36), so its distance from the star, and with it the climate, swings dramatically.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 967 °C. Hot enough to melt copper; any surface would glow. It receives 284.1 times the starlight Earth gets.
Its sun
Its star is a red dwarf (3,657 K surface), type M1 III: small, dim, flare-prone, and destined to outlive the Sun many times over.
How far is that, really?
At 202 light-years, tonight's light from this system left it around the year 1823. A Voyager-speed probe would need roughly 3,581,968 years to get there.
How we found it
It was found by the radial-velocity method: the planet's gravity swings its star in a small circle, and that wobble shows up as a rhythmic Doppler shift in the starlight. The wobble's size gives the planet's minimum mass. The discovery was announced in 2023 from Bohyunsan Optical Astronomical 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.