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The Jovian planet was the first discovered around a red dwarf. [2] [3] First discovered with giant planet(s) Gliese 876: 1998 Gliese 876 b: The giant planet was the first planet discovered around a red dwarf. [2] [3] First discovered with terrestrial planet(s) Kepler-42 : 2012 KOI-961 b KOI-961 c KOI-961 d
Red dwarf: This was once the smallest known actively fusing star, when found in 2005, through 2013. It is the smallest eclipsing red dwarf, and smallest observationally measured diameter. [101] [102] [103] CoRoT-15b: 82,200 Brown dwarf [104] VB 10: 82,300 Red dwarf: It was the smallest known star from 1948 to 1981. [105] TRAPPIST-1: 82,925
UDF 2457 is the Hubble Ultra Deep Field (UDF) identifier for a red dwarf star calculated to be about 59,000 light-years (18 kiloparsecs) from Earth [2] with a very dim apparent magnitude of 25. [1] The Milky Way galaxy is about 100,000 light-years in diameter, [3] and the Sun is about 25,000 light-years from the Galactic Center. [4]
Kepler-80, also known as KOI-500, is a red dwarf star of the spectral type M0V. [2] This stellar classification places Kepler-80 among the very common, cool, class M stars that are still within their main evolutionary stage, known as the main sequence .
The star has a stellar classification of M6.5V, [4] identifying it as a type of main sequence star known as a red dwarf. It has about 10% of the mass of the Sun, and 12% of the Sun's radius. [ 8 ] The outer envelope of the star has an effective temperature of 2,840 K, [ 9 ] making it an M-type star .
Dark hycean planets thought to be common around red dwarf stars. [13] Red dwarf stars are the most common type of star in the Milky Way galaxy. [14] They are considered to be a promising place to search for life beyond Earth. Hycean planets have the ingredients that is necessary for life, including liquid water, energy, and organic molecules. [6]
Proxima Centauri is a red dwarf, because it belongs to the main sequence on the Hertzsprung–Russell diagram and is of spectral class M5.5. The M5.5 class means that it falls in the low-mass end of M-type dwarf stars, [14] with its hue shifted toward red-yellow [21] by an effective temperature of ~3,000 K. [8]
RR Caeli was first noted to be a high-proper motion star in 1955 by Jacob Luyten, and given the designation LFT 349.. This star system consists of a red dwarf of spectral type M6 and a white dwarf that orbit each other every seven hours; the former is 18% as massive as the Sun, while the latter has 44% of the Sun's mass. [8]