KELT-23 A is 412 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G2 V star; the first was found in 2019 by transit (KELT-North).
Fly there in 3DKELT-23 A b goes round its star every 2.26 days, 39 times as often as Mercury goes round the Sun.
KELT-23 A is one of 2 stars in its system. The position of the other star is not catalogued, so only KELT-23 A and its planets are drawn.
| Spectral type | G2 V |
| Surface temperature | 5,899 K |
| Mass | 0.944 solar masses |
| Radius | 0.996 solar radii |
| Luminosity | 1.081 times the Sun |
| Apparent magnitude | 10.308 |
| Age | about 6.4 billion years |
| Distance from the Sun | 411.8 light-years (126.3 parsecs) |
| Position (J2000) | RA 232.1466°, Dec 66.3587° |
| Constellation | Ursa Minor |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| KELT-23 A b | 2.26 days | 0.0330 AU | 14.83 R⊕ | 298.12 M⊕ | Transit, 2019 |
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 5,899 K, 1.1 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.98 to 1.72 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 412 years ago, around 1610.