Exoplanet CatalogThe HR 8799 planetary system
Distance (light-years)134.5
Spectral typeA5
Temperature (K)7,400
Mass (Sun = 1)1.51
| Planet | Method | Year | Orbital period (days) | Radius (Earth = 1) | Mass (Earth = 1) | Equilibrium temperature (K) |
|---|---|---|---|---|---|---|
| HR 8799 e | Imaging | 2010 | 20,815.60 | 13.11 | 3,178.3 | 1,150 |
| HR 8799 d | Imaging | 2008 | 37,000.00 | 13.00 | 3,000.0 | 1,300 |
| HR 8799 c | Imaging | 2008 | 69,000.00 | 13.00 | 3,000.0 | 1,200 |
| HR 8799 b | Imaging | 2008 | 170,000.00 | 13.00 | 2,000.0 | 1,200 |
Values are the archive’s composite parameters and may combine several publications; mass may be a minimum mass (M·sin i). “–” means no value in the archive.
The star
| Spectral type | Temperature (K) | Radius (Sun = 1) | Mass (Sun = 1) |
|---|---|---|---|
| A5 | 7,400 | 1.49 | 1.51 |
About this page
HR 8799 is about 134.5 light-years from the Sun and has 4 confirmed planet(s).