Exoplanet · gas giant
NGTS-23 b
NGTS-23 b is a gas giant orbiting the star NGTS-23. Its year lasts 4.08 Earth days. It was discovered in 2022 by the Transit method.
| Host star | NGTS-23 |
|---|---|
| Distance | 3,506 light-years (1,075 pc) |
| Orbital period | 4.08 days |
| Orbital radius | 0.0504 AU |
| Eccentricity | 0.000 |
| Radius | 14.2 R⊕ · 1.27 R♃ |
| Mass | 195 M⊕ · 0.613 M♃ |
| Density | 0.374 g/cm³ |
| Surface gravity | 0.966 × Earth |
| Equilibrium temperature | 1,327 K (1,054 °C) |
| Stellar flux received | 816 × Earth |
| Discovery method | Transit |
| Discovery year | 2022 |
| Discovered by | Next-Generation Transit Survey (NGTS) |
Habitable zone
Inside the inner edge of the habitable zone: it receives 816 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 13° across: 24 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 14.13. Visible from the whole Southern Hemisphere and north to latitude 50° N. South of latitude 50° 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 1481 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 62 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.