Kepler-1321 is 2,509 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this 4,094 K star; the first was found in 2016 by transit (Kepler).
Fly there in 3DKepler-1321 c goes round its star every 2.23 days, 40 times as often as Mercury goes round the Sun.
| Surface temperature | 4,094 K |
| Mass | 0.54 solar masses |
| Radius | 0.53 solar radii |
| Luminosity | 0.1373 times the Sun |
| Apparent magnitude | 17.5054 |
| Age | about 4.17 billion years |
| Distance from the Sun | 2508.6 light-years (769.1 parsecs) |
| Position (J2000) | RA 294.5286°, Dec 46.6409° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-1321 c | 2.23 days | 0.0267 AU | 2.4 R⊕ | 6.35 M⊕ estimated | Transit, 2016 |
| Kepler-1321 d | 5.72 days | 0.0501 AU | 2.6284 R⊕ | 7.41 M⊕ estimated | Transit, 2021 |
| Kepler-1321 b | 11.1 days | 0.0781 AU | 4.92 R⊕ | 21.5 M⊕ estimated | Transit, 2016 |
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 4,094 K, 0.14 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.38 to 0.72 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 2,509 years ago, around 500 BC.