TOI-858 B is 817 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G0 star; the first was found in 2023 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-858 B b goes round its star every 3.28 days, 27 times as often as Mercury goes round the Sun.
TOI-858 B is one of 2 stars in its system. The position of the other star is not catalogued, so only TOI-858 B and its planets are drawn.
| Spectral type | G0 |
| Surface temperature | 5,842 K |
| Mass | 1.081 solar masses |
| Radius | 1.308 solar radii |
| Luminosity | 1.79 times the Sun |
| Apparent magnitude | 11.183 |
| Age | about 6.8 billion years |
| Distance from the Sun | 817.0 light-years (250.5 parsecs) |
| Position (J2000) | RA 60.1998°, Dec -54.5929° |
| Constellation | Reticulum |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-858 B b | 3.28 days | 0.0444 AU | 14.067 R⊕ | 349.61 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.