Exoplanet · gas giant
Kepler-1660 AB b
Kepler-1660 AB b is a gas giant orbiting the star Kepler-1660 A. Its year lasts 240 Earth days. It was discovered in 2023 by the Eclipse Timing Variations method.
| Host star | Kepler-1660 A |
|---|---|
| Distance | 3,877 light-years (1,189 pc) |
| Orbital period | 240 days |
| Orbital radius | 0.8 AU |
| Eccentricity | 0.055 |
| Radius | 12.9 R⊕ · 1.15 R♃ |
| Mass | 1,590 M⊕ · 4.99 M♃ |
| Density | 4.06 g/cm³ |
| Surface gravity | 9.53 × Earth |
| Equilibrium temperature | 415 K (142 °C) |
| Stellar flux received | 7.28 × Earth |
| Discovery method | Eclipse Timing Variations |
| Discovery year | 2023 |
| Discovered by | Kepler |
Habitable zone
Inside the inner edge of the habitable zone: it receives 7.28 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 0.99° across: 1.9 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 13.60. Visible from the whole Northern Hemisphere and south to latitude 50° S. North of latitude 50° N it never sets. It stands highest at midnight in July, the best time to observe it.
Light's journey
The light you see tonight set out around 1852 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 69 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.