Red dwarf TRAPPIST-1 is located 41 light years away from the Sun.
It is a single star of spectral class M7.5e, that has 9 % of solar mass.
There are multiple known exoplanets in this system.
More about TRAPPIST-1
Nearby star TRAPPIST-1 is approximately 10 % of the size of Sun and temperature on its surface is around 2400 K (2127 °C), which is about 42 % of Sun's temperature.
TRAPPIST-1 can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
2MASS J23062928-0502285, 2MASSI J2306292-050227, 2MASSW J2306292-050227, 2MUDC 12171, K2-112, TIC 278892590, WISEA J230630.02-050234.1, EPIC 200164267, Gaia EDR3 2635476908753563008
Class of stars Red dwarf
Red dwarfs are small reddish stars, that are by far the most common type of star in solar neighborhood. Their mass is usually between 10 and 50 % of solar mass.