Exoplanet CatalogThe TRAPPIST-1 planetary system
Distance (light-years)40.5
Spectral typeM8.0 V
Temperature (K)2,566
Mass (Sun = 1)0.09
| Planet | Method | Year | Orbital period (days) | Radius (Earth = 1) | Mass (Earth = 1) | Equilibrium temperature (K) |
|---|---|---|---|---|---|---|
| TRAPPIST-1 b | Transit | 2016 | 1.51 | 1.12 | 1.4 | 398 |
| TRAPPIST-1 c | Transit | 2016 | 2.42 | 1.10 | 1.3 | 340 |
| TRAPPIST-1 d | Transit | 2016 | 4.05 | 0.79 | 0.4 | 286 |
| TRAPPIST-1 e | Transit | 2017 | 6.10 | 0.92 | 0.7 | 250 |
| TRAPPIST-1 f | Transit | 2017 | 9.21 | 1.04 | 1.0 | 218 |
| TRAPPIST-1 g | Transit | 2017 | 12.35 | 1.13 | 1.3 | 197 |
| TRAPPIST-1 h | Transit | 2017 | 18.77 | 0.76 | 0.3 | 172 |
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) |
|---|---|---|---|
| M8.0 V | 2,566 | 0.12 | 0.09 |
About this page
TRAPPIST-1 is about 40.5 light-years from the Sun and has 7 confirmed planet(s).