Kepler-2001 is 2,533 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,081 K star; the first was found in 2023 by transit (Kepler).
Fly there in 3DKepler-2001 b goes round its star every 26.2 hours, 81 times as often as Mercury goes round the Sun.
| Surface temperature | 5,081 K |
| Mass | 0.864 solar masses |
| Radius | 0.77 solar radii |
| Luminosity | 0.2843 times the Sun |
| Apparent magnitude | 15.981 |
| Age | about 4 billion years |
| Distance from the Sun | 2532.8 light-years (776.6 parsecs) |
| Position (J2000) | RA 291.6595°, Dec 50.5839° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-2001 b | 26.2 hours | 0.0197 AU | 1.04 R⊕ | 1.12 M⊕ estimated | Transit, 2023 |
| Kepler-2001 c | 14.1 days | 0.108 AU | 1.82 R⊕ | 3.97 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 5,081 K, 0.28 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.53 to 0.95 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 2,533 years ago, around 500 BC.