TOI-251 is 325 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,875 K star; the first was found in 2021 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-251 b goes round its star every 4.94 days, 18 times as often as Mercury goes round the Sun.
| Surface temperature | 5,875 K |
| Mass | 1.036 solar masses |
| Radius | 0.881 solar radii |
| Luminosity | 0.831 times the Sun |
| Apparent magnitude | 9.887 |
| Age | about 0.18 billion years |
| Distance from the Sun | 324.6 light-years (99.5 parsecs) |
| Position (J2000) | RA 353.0621°, Dec -37.2559° |
| Constellation | Sculptor |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-251 b | 4.94 days | 0.0574 AU | 2.74 R⊕ | 317.83 M⊕ | Transit, 2021 |
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.