TOI-2015 is 154 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M4 +/- 0.5 star; the first was found in 2023 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-2015 b goes round its star every 3.35 days, 26 times as often as Mercury goes round the Sun.
| Spectral type | M4 +/- 0.5 |
| Surface temperature | 3,297 K |
| Mass | 0.3041 solar masses |
| Radius | 0.3273 solar radii |
| Luminosity | 0.0322 times the Sun |
| Apparent magnitude | 16.11 |
| Age | about 5.5 billion years |
| Distance from the Sun | 154.4 light-years (47.3 parsecs) |
| Position (J2000) | RA 232.1327°, Dec 27.3611° |
| Constellation | Corona Borealis |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-2015 b | 3.35 days | 0.0293 AU | 3.309 R⊕ | 9.2 M⊕ | Transit, 2023 |
| TOI-2015 c | 5.58 days | 0.0412 AU | 2.93 R⊕ estimated | 8.91 M⊕ | Transit Timing Variations, 2025 |
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 3,297 K, 0.032 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.19 to 0.37 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 154 years ago, around 1870.