TOI-1855 is 577 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,359 K star; the first was found in 2024 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-1855 b goes round its star every 32.7 hours, 65 times as often as Mercury goes round the Sun.
| Surface temperature | 5,359 K |
| Mass | 0.987 solar masses |
| Radius | 1.041 solar radii |
| Luminosity | 0.804 times the Sun |
| Apparent magnitude | 11.197 |
| Age | about 8.2 billion years |
| Distance from the Sun | 576.8 light-years (176.8 parsecs) |
| Position (J2000) | RA 205.3540°, Dec 17.6869° |
| Constellation | Boötes |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-1855 b | 32.7 hours | 0.0240 AU | 18.495 R⊕ | 360.1 M⊕ | Transit, 2024 |
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.