About this system
The innermost, Kepler-391 b, circles it in 7.42 days; the outermost, Kepler-391 c, in 20.5 days.
Worlds of Kepler-391
| Name | Type | Size | A year | Temperature |
|---|---|---|---|---|
| Kepler-391 b | Sub-Neptune | 2.5 × Earth | 7.42 days | 930 K |
| Kepler-391 c | Sub-Neptune | 2.9 × Earth | 20.5 days | 662 K |