TRAPPIST-1
An ultra-cool red dwarf with seven planets.
TRAPPIST-1 is an ultra-cool red dwarf with seven known planets, about 40.7 light-years away in Aquarius. It is slightly larger than Jupiter, has about 9% of the Sun's mass and a surface temperature around 2,566 K.
It is about 7.6 billion years old, older than the Solar System. Its discovery was published in 2000.
Quick Facts
- Type
- Red dwarf
- Constellation
- Aquarius
- Planets
- 7
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