TOI-1899 is 419 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this M0 star; the first was found in 2020 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-1899 b goes round its star every 29.1 days, 3 times as often as Mercury goes round the Sun.
| Spectral type | M0 |
| Surface temperature | 3,926 K |
| Mass | 0.632 solar masses |
| Radius | 0.607 solar radii |
| Luminosity | 0.08773 times the Sun |
| Apparent magnitude | 14.88 |
| Age | about 7.1 billion years |
| Distance from the Sun | 418.9 light-years (128.4 parsecs) |
| Position (J2000) | RA 299.4268°, Dec 40.1433° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-1899 b | 29.1 days | 0.152 AU | 11.097 R⊕ | 212.95 M⊕ | Transit, 2020 |
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 3,926 K, 0.088 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.30 to 0.58 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 419 years ago, around 1610.