Stars · Red dwarf
TRAPPIST-1
40 light-years · Light crosses it in 0.55 seconds
- Across
- 165,855 km
- Vs Earth
- 1.19× Jupiter
- Mass
- 0.09 Suns
Open TRAPPIST-1 in Cosmic Scale
About
TRAPPIST-1 is a cool red dwarf barely larger than Jupiter, and it has seven Earth-sized planets — the largest family of rocky worlds known around one star. Three of them orbit where liquid water could be possible.
Barely bigger than Jupiter, yet seven Earth-sized planets orbit it.
At a glance
| Distance | 40 light-years |
|---|---|
| Surface | 2,566 K |
| Planets | Seven, all Earth-sized |
| Found | 2016–2017 |
Did you know
- All seven orbits would fit comfortably inside Mercury's; the innermost planet's year lasts 1.5 days.
- From one planet's sky the others would appear larger than our Moon.
- Red dwarfs burn so slowly that this star will still be shining in trillions of years.