TOI-603 is 672 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this F8 IV star; the first was found in 2026 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-603 b goes round its star every 16.2 days, 5 times as often as Mercury goes round the Sun.
| Spectral type | F8 IV |
| Surface temperature | 6,027 K |
| Mass | 1.24 solar masses |
| Radius | 1.477 solar radii |
| Luminosity | 2.592 times the Sun |
| Apparent magnitude | 10.312 |
| Distance from the Sun | 671.6 light-years (205.9 parsecs) |
| Position (J2000) | RA 141.1079°, Dec 5.7661° |
| Constellation | Hydra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-603 b | 16.2 days | 0.128 AU | 7.37 R⊕ | 33 M⊕ | Transit, 2026 |
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 6,027 K, 2.6 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.51 to 2.64 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 672 years ago, around 1350.