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cool red dwarf · MV

K2-3

K2-3 is a cool red dwarf 144 light-years from Earth, with a temperature of 3,844 K, 0.55 times the Sun's mass and an age of about 6.9 billion years. It has 3 known planets.

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Planets
3 
Distance
144 light-years44.1 pc
Star
3,844 K0.55 R☉

About this system

The innermost, K2-3 b, circles it in 10.1 days; the outermost, K2-3 d, in 44.6 days. One of them lies in the habitable zone: K2-3 d.

Worlds of K2-3

NameTypeSizeA yearTemperature
K2-3 bSub-Neptune 2.1 × Earth10.1 days501 K
K2-3 cSuper-Earth 1.6 × Earth24.6 days372 K
K2-3 dSuper-Earth 1.5 × Earth44.6 days305 K