Ultra-cool dwarf

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File:Comparison between the Sun and the ultracool dwarf star TRAPPIST-1.jpg
Size comparison of a TRAPPIST-1 an ultra-cool dwarf and the Sun.

An ultra-cool dwarf is a stellar or sub-stellar object of spectral class M that has an effective temperature under 2,700 K (2,430 °C; 4,400 °F).[1] TRAPPIST-1 is an example of an Ultra-cool dwarf.[1]

References

  1. ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.

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