HD 109833 is 259 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,881 K star; the first was found in 2022 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DHD 109833 b goes round its star every 9.19 days, 10 times as often as Mercury goes round the Sun.
Where the archive gives only a period or only an orbit size, the other is worked out from Kepler’s third law with the star’s mass.
| Surface temperature | 5,881 K |
| Mass | 1.08 solar masses |
| Radius | 1 solar radii |
| Luminosity | 1.18 times the Sun |
| Apparent magnitude | 9.29 |
| Age | about 0.027 billion years |
| Distance from the Sun | 259.5 light-years (79.6 parsecs) |
| Position (J2000) | RA 189.7759°, Dec -74.5740° |
| Constellation | Musca |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 109833 b | 9.19 days | 0.0881 AU from Kepler’s law | 2.888 R⊕ | 8.69 M⊕ estimated | Transit, 2022 |
| HD 109833 c | 13.9 days | 0.116 AU from Kepler’s law | 2.59 R⊕ | 7.22 M⊕ estimated | Transit, 2022 |
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.