TOI-3688 A is 1,293 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,950 K star; the first was found in 2023 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-3688 A b goes round its star every 3.25 days, 27 times as often as Mercury goes round the Sun.
TOI-3688 A is one of 2 stars in its system. The position of the other star is not catalogued, so only TOI-3688 A and its planets are drawn.
| Surface temperature | 5,950 K |
| Mass | 1.199 solar masses |
| Radius | 1.302 solar radii |
| Luminosity | 1.92 times the Sun |
| Apparent magnitude | 12.241 |
| Age | about 3.3 billion years |
| Distance from the Sun | 1292.8 light-years (396.4 parsecs) |
| Position (J2000) | RA 39.2823°, Dec 54.8512° |
| Constellation | Perseus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-3688 A b | 3.25 days | 0.0456 AU | 13.081 R⊕ | 311.47 M⊕ | Transit, 2023 |
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.