HD 203030 is 128 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G8 V star; the first was found in 2006 by imaging (Palomar Observatory).
Fly there in 3DHD 203030 b was photographed directly: it is one of the few exoplanets seen as its own point of light rather than inferred from its star.
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.
| Spectral type | G8 V |
| Surface temperature | 5,603 K |
| Mass | 0.94 solar masses |
| Radius | 0.856458 solar radii |
| Luminosity | 0.5927 times the Sun |
| Apparent magnitude | 8.45 |
| Age | about 0.1 billion years |
| Distance from the Sun | 128.0 light-years (39.3 parsecs) |
| Position (J2000) | RA 319.7432°, Dec 26.2306° |
| Constellation | Vulpecula |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 203030 b | 11088.3 years from Kepler’s law | 487.100 AU | 14.46 R⊕ | 3496.1 M⊕ | Imaging, 2006 |
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.