Exoplanet · mini-Neptune
HD 23079 c
HD 23079 c is a mini-Neptune orbiting the star Tupi. Its year lasts 5.75 Earth days. It was discovered in 2025 by the Radial Velocity method.
| Host star | Tupi |
|---|---|
| Distance | 109.1 light-years (33.5 pc) |
| Orbital period | 5.75 days |
| Eccentricity | 0.097 |
| Radius | 2.8 R⊕ · 0.25 R♃ |
| Mass (minimum) | 8.26 M⊕ · 0.026 M♃ |
| Density | 2.07 g/cm³ |
| Discovery method | Radial Velocity |
| Discovery year | 2025 |
| Discovered by | La Silla Observatory |
In the sky
Too faint for the naked eye (magnitude 7.12); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 37° N. South of latitude 37° S it never sets. It stands highest at midnight in November, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1917. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
Planets in the same system
- HD 23079 b 736-day orbit · 13.2 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.