GJ 9689 is 99.9 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this M0.5 star; the first was found in 2020 by radial velocity (Roque de los Muchachos Observatory).
Fly there in 3DGJ 9689 b goes round its star every 18.3 days, 5 times as often as Mercury goes round the Sun.
| Spectral type | M0.5 |
| Surface temperature | 3,836 K |
| Mass | 0.59 solar masses |
| Radius | 0.57 solar radii |
| Luminosity | 0.0631 times the Sun |
| Apparent magnitude | 11.297 |
| Age | about 8.9 billion years |
| Distance from the Sun | 99.9 light-years (30.6 parsecs) |
| Position (J2000) | RA 303.4677°, Dec 13.3889° |
| Constellation | Aquila |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| GJ 9689 b | 18.3 days | 0.114 AU | 3.07 R⊕ estimated | 9.65 M⊕ minimum | Radial Velocity, 2020 |
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.