TOI-3664 is 1,516 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,593 K star; the first was found in 2026 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-3664 b goes round its star every 3.30 days, 27 times as often as Mercury goes round the Sun.
| Surface temperature | 5,593 K |
| Mass | 0.98 solar masses |
| Radius | 1.11 solar radii |
| Luminosity | 1.19 times the Sun |
| Apparent magnitude | 13.883 |
| Age | about 9 billion years |
| Distance from the Sun | 1515.8 light-years (464.7 parsecs) |
| Position (J2000) | RA 35.3085°, Dec 59.7119° |
| Constellation | Cassiopeia |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-3664 b | 3.30 days | 0.0431 AU | 13.697 R⊕ | 114.42 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.