KELT-12 is 1,200 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 6,279 K star; the first was found in 2017 by transit (KELT-North).
Fly there in 3DKELT-12 b goes round its star every 5.03 days, 17 times as often as Mercury goes round the Sun.
| Surface temperature | 6,279 K |
| Mass | 1.591 solar masses |
| Radius | 2.37 solar radii |
| Luminosity | 7.8 times the Sun |
| Apparent magnitude | 10.585 |
| Age | about 2.2 billion years |
| Distance from the Sun | 1200.4 light-years (368.0 parsecs) |
| Position (J2000) | RA 267.6405°, Dec 36.5702° |
| Constellation | Hercules |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| KELT-12 b | 5.03 days | 0.0671 AU | 19.952 R⊕ | 301.94 M⊕ | Transit, 2017 |
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 6,279 K, 7.8 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 2.58 to 4.49 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 1,200 years ago, around AD 830.