Exoplanet · mini-Neptune
HD 141004 b
HD 141004 b is a mini-Neptune orbiting the star HD 141004. Its year lasts 15.5 Earth days. It was discovered in 2021 by the Radial Velocity method.
| Host star | HD 141004 |
|---|---|
| Distance | 38.5 light-years (11.8 pc) |
| Orbital period | 15.5 days |
| Orbital radius | 0.124 AU |
| Eccentricity | 0.160 |
| Radius | 3.77 R⊕ · 0.336 R♃ |
| Mass (minimum) | 13.6 M⊕ · 0.0429 M♃ |
| Density | 1.4 g/cm³ |
| Equilibrium temperature | 951 K (678 °C) |
| Stellar flux received | 145 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2021 |
| Discovered by | Multiple Observatories |
Habitable zone
Inside the inner edge of the habitable zone: it receives 145 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 6° across: 11 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.42). Visible from the whole Northern Hemisphere and south to latitude 83° S. It stands highest at midnight in May, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1987. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 684 thousand years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.