TOI-2421 is 1,070 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,607 K star; the first was found in 2022 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-2421 b goes round its star every 4.35 days, 20 times as often as Mercury goes round the Sun.
| Surface temperature | 5,607 K |
| Mass | 1.131 solar masses |
| Radius | 1.75 solar radii |
| Luminosity | 2.729 times the Sun |
| Apparent magnitude | 11.419 |
| Age | about 7.5 billion years |
| Distance from the Sun | 1069.6 light-years (327.9 parsecs) |
| Position (J2000) | RA 33.1540°, Dec -35.3909° |
| Constellation | Fornax |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-2421 b | 4.35 days | 0.0543 AU | 10.368 R⊕ | 105.84 M⊕ | Transit, 2022 |
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 5,607 K, 2.7 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.59 to 2.81 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 1,070 years ago, around AD 960.