Exoplanet · Neptune-like planet
TCP J05074264+2447555 b
TCP J05074264+2447555 b is a Neptune-like planet orbiting the star TCP J05074264+2447555. It was discovered in 2018 by the Microlensing method.
| Host star | TCP J05074264+2447555 |
|---|---|
| Distance | 1,647 light-years (505.0 pc) |
| Orbital radius | 0.94 AU |
| Radius | 4.72 R⊕ · 0.421 R♃ |
| Mass | 20 M⊕ · 0.0629 M♃ |
| Density | 1.05 g/cm³ |
| Surface gravity | 0.898 × Earth |
| Equilibrium temperature | 345 K (71 °C) |
| Stellar flux received | 2.35 × Earth |
| Discovery method | Microlensing |
| Discovery year | 2018 |
| Discovered by | Multiple Observatories |
Habitable zone
Inside the inner edge of the habitable zone: it receives 2.35 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 0.81° across: 1.5 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 14.24. Visible from the whole Northern Hemisphere and south to latitude 65° S. North of latitude 65° N it never sets. It stands highest at midnight in December, the best time to observe it.
Light's journey
The light you see tonight set out around the year 379. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 29 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.