Exoplanet · Neptune-like planet
AU Mic e
AU Mic e is a Neptune-like planet orbiting the star AU Mic. Its year lasts 33.1 Earth days. It was discovered in 2025 by the Radial Velocity method.
| Host star | AU Mic |
|---|---|
| Distance | 31.7 light-years (9.72 pc) |
| Orbital period | 33.1 days |
| Radius | 4.87 R⊕ · 0.434 R♃ |
| Mass | 21.1 M⊕ · 0.0664 M♃ |
| Density | 1 g/cm³ |
| Surface gravity | 0.89 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2025 |
| Discovered by | Mauna Kea Observatory |
In the sky
Too faint for the naked eye (magnitude 8.81); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 59° N. South of latitude 59° S it never sets. It stands highest at midnight in July, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1994. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 563 thousand years.
Planets in the same system
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.