Exoplanet · mini-Neptune
HD 3167 c
HD 3167 c is a mini-Neptune orbiting the star HD 3167. Its year lasts 29.8 Earth days. It was discovered in 2016 by the Transit method.
| Host star | HD 3167 |
|---|---|
| Distance | 154.2 light-years (47.3 pc) |
| Orbital period | 29.8 days |
| Orbital radius | 0.179 AU |
| Eccentricity | 0.040 |
| Radius | 2.98 R⊕ · 0.266 R♃ |
| Mass | 11.4 M⊕ · 0.0359 M♃ |
| Density | 2.36 g/cm³ |
| Surface gravity | 1.28 × Earth |
| Equilibrium temperature | 567 K (294 °C) |
| Stellar flux received | 16.9 × Earth |
| Discovery method | Transit |
| Discovery year | 2016 |
| Discovered by | K2 |
Habitable zone
Inside the inner edge of the habitable zone: it receives 16.9 times the light the Earth does, too hot to keep liquid water on its surface.
Its star in the sky
In the planet's sky its star is a disc 2.6° across: 4.9 times the Sun as we see it from Earth.
In the sky
Too faint for the naked eye (magnitude 8.97); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 86° S. It stands highest at midnight in September, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1872. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.7 million 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.