Kepler-1801 is 2,738 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,738 K star; the first was found in 2021 by transit (Kepler).
Fly there in 3DKepler-1801 b goes round its star every 10.4 days, 8 times as often as Mercury goes round the Sun.
| Surface temperature | 5,738 K |
| Mass | 0.936 solar masses |
| Radius | 0.981 solar radii |
| Luminosity | 0.5988 times the Sun |
| Apparent magnitude | 15.28 |
| Age | about 8.1 billion years |
| Distance from the Sun | 2737.5 light-years (839.3 parsecs) |
| Position (J2000) | RA 295.1640°, Dec 39.2014° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-1801 b | 10.4 days | 0.0915 AU | 2.7093 R⊕ | 7.8 M⊕ estimated | Transit, 2021 |
| Kepler-1801 c | 116.6 days | 0.457 AU | 2.91 R⊕ | 8.8 M⊕ estimated | Transit, 2023 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.
For a star of 5,738 K, 0.60 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.74 to 1.30 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.
The light you see left 2,738 years ago, around 700 BC.