TOI-1259 A is 385 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 4,775 K star; the first was found in 2021 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-1259 A b goes round its star every 3.48 days, 25 times as often as Mercury goes round the Sun.
TOI-1259 A is one of 2 stars in its system. The position of the other star is not catalogued, so only TOI-1259 A and its planets are drawn.
| Surface temperature | 4,775 K |
| Mass | 0.746 solar masses |
| Radius | 0.715 solar radii |
| Luminosity | 0.2571 times the Sun |
| Apparent magnitude | 12.079 |
| Age | about 4.8 billion years |
| Distance from the Sun | 385.2 light-years (118.1 parsecs) |
| Position (J2000) | RA 282.1002°, Dec 79.2565° |
| Constellation | Draco |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-1259 A b | 3.48 days | 0.0408 AU | 11.6 R⊕ | 141 M⊕ | Transit, 2021 |
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.