TOI-270 is 73.3 light-years from the Sun. The NASA Exoplanet Archive lists 3 planets around this M3 V star; the first was found in 2019 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-270 b goes round its star every 3.36 days, 26 times as often as Mercury goes round the Sun.
| Spectral type | M3 V |
| Surface temperature | 3,506 K |
| Mass | 0.386 solar masses |
| Radius | 0.38 solar radii |
| Luminosity | 0.0194 times the Sun |
| Apparent magnitude | 12.603 |
| Distance from the Sun | 73.3 light-years (22.5 parsecs) |
| Position (J2000) | RA 68.4161°, Dec -51.9574° |
| Constellation | Pictor |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-270 b | 3.36 days | 0.0320 AU | 1.28 R⊕ | 1.48 M⊕ | Transit, 2019 |
| TOI-270 c | 5.66 days | 0.0453 AU | 2.33 R⊕ | 6.2 M⊕ | Transit, 2019 |
| TOI-270 d | 11.4 days | 0.0721 AU | 2 R⊕ | 4.2 M⊕ | Transit, 2019 |
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 3,506 K, 0.019 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.14 to 0.28 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 73 years ago, within living memory.