TOI-2040 is 472 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,132 K star; the first was found in 2026 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-2040 b goes round its star every 3.86 days, 23 times as often as Mercury goes round the Sun.
| Surface temperature | 5,132 K |
| Mass | 0.92 solar masses |
| Radius | 0.87 solar radii |
| Luminosity | 0.6 times the Sun |
| Apparent magnitude | 11.489 |
| Age | about 8.7 billion years |
| Distance from the Sun | 472.0 light-years (144.7 parsecs) |
| Position (J2000) | RA 352.2747°, Dec 71.5065° |
| Constellation | Cepheus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-2040 b | 3.86 days | 0.0473 AU | 10.323 R⊕ | 248.22 M⊕ | Transit, 2026 |
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.