TOI-1533 is 326 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,146 K star; the first was found in 2026 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-1533 b goes round its star every 3.65 days, 24 times as often as Mercury goes round the Sun.
| Surface temperature | 5,146 K |
| Mass | 0.88 solar masses |
| Radius | 0.849 solar radii |
| Luminosity | 0.45 times the Sun |
| Apparent magnitude | 10.953 |
| Age | about 6.9 billion years |
| Distance from the Sun | 326.3 light-years (100.1 parsecs) |
| Position (J2000) | RA 355.2467°, Dec 57.4852° |
| Constellation | Cassiopeia |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-1533 b | 3.65 days | 0.0445 AU | 2.89 R⊕ | 28.1 M⊕ | Transit, 2026 |
| TOI-1533 c | 8.06 days | 0.0760 AU | 7.5 R⊕ | 36.6 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.