TOI-198 is 77.4 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this M0 V star; the first was found in 2023 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-198 b goes round its star every 10.2 days, 9 times as often as Mercury goes round the Sun.
| Spectral type | M0 V |
| Surface temperature | 3,801 K |
| Mass | 0.417 solar masses |
| Radius | 0.418 solar radii |
| Luminosity | 0.03281 times the Sun |
| Apparent magnitude | 11.688 |
| Age | about 1 billion years |
| Distance from the Sun | 77.4 light-years (23.7 parsecs) |
| Position (J2000) | RA 2.2715°, Dec -27.1217° |
| Constellation | Sculptor |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-198 b | 10.2 days | 0.0675 AU | 1.36 R⊕ | 3.17 M⊕ | Transit, 2023 |
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.