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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. [102] [103] [104] CoRoT-15b: 82,200 Brown dwarf [105] VB 10: 82,300 Red dwarf: It was the smallest known star from 1948 to 1981. [106] TRAPPIST-1: 82,925
List of smallest red dwarf titleholders; Star Date Radius Solar radii (Sun = 1) Radius Jupiter radii (Jupiter = 1) Radius km (mi) Notes EBLM J0555-57Ab:
VB 10 or Van Biesbroeck's star / v æ n ˈ b iː z b r ʊ k / [7] is a small and dim red dwarf [2] located in the constellation Aquila.It is part of a binary star system. VB 10 is historically notable as it was the least luminous and least massive known star from its discovery in 1944, until 1982 when LHS 2924 was shown to be less luminous. [8]
SPECULOOS-3, also known as LSPM J2049+3336, is a red dwarf star (spectral type M6.5) located 54.6 light-years from Earth [4] in the constellation Cygnus.It is one of the smallest known stars, and is much cooler, dimmer and smaller than the Sun, having 0.1 times the mass, 0.08% the Sun's luminosity, and an effective temperature of 2,800 K (2,530 °C), which is less than half of the Sun's ...
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]
LHS 2065 is a red dwarf star, one of the smallest stars ever found with around 8.2% the mass of the Sun and a diameter only 10% greater than Jupiter. [6] It is one of the few ultracool dwarfs known to have flare activity, emmiting one flare every 33 hours, [5] and is also an active X-ray emitter.
GJ 1132 is a small red dwarf star 41.1 light-years (12.6 parsecs) away from Earth [1] in the constellation Vela. In 2015, it was revealed to have a hot rocky Earth-sized planet orbiting it every 1.6 days. [6] In 2018, a second planet and a potential third were revealed. [4]
This makes this star one of the smallest and coolest main sequence stars. [2] It has a stellar classification of L2.5 and a V−K color index of 9.42. [ 2 ] The mass is estimated to be 67.54 ± 12.79 M J ( 0.0644 ± 0.0122 M ☉ ), [ 6 ] though the CARMENES input catalogue estimates a mass around 103 M J . [ 5 ]
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