TOI-1823 is 234 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 4,927 K star; the first was found in 2024 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-1823 b goes round its star every 38.8 days, 2.3 times as often as Mercury goes round the Sun.
| Surface temperature | 4,927 K |
| Mass | 0.8414 solar masses |
| Radius | 0.8049 solar radii |
| Luminosity | 0.346 times the Sun |
| Apparent magnitude | 10.728 |
| Age | about 6.3 billion years |
| Distance from the Sun | 233.7 light-years (71.6 parsecs) |
| Position (J2000) | RA 196.2197°, Dec 63.7533° |
| Constellation | Draco |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-1823 b | 38.8 days | 0.212 AU | 7.5406 R⊕ | 67.4 M⊕ | Transit, 2024 |
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 4,927 K, 0.35 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.59 to 1.06 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 234 years ago, around 1790.