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A red giant star with one of the largest ranges in brightness known of stars in the night sky visible to the unaided eye. Despite its large radius, it is less massive than the Sun. 119 Tauri (CE Tauri, Ruby Star) 587 – 593 [74] AD ρ Cassiopeiae: 564 ± 67 or 700 ± 112 [75] AD
A few notable large stars with masses less than 60 M ☉ are shown in the table below for the purpose of comparison, ending with the Sun, which is very close, but would otherwise be too small to be included in the list. At present, all the listed stars are naked-eye visible and relatively nearby.
They determined that all three stars are over 1,000 times bigger than the Sun and over 100,000 times more luminous than the Sun. The stars' sizes were calculated using the Rosseland radius , the location at which the optical depth is 2 ⁄ 3 , [ 20 ] with distances adopted from earlier publications.
VY Canis Majoris is a highly evolved star yet less than 10 million years old (Myr old). Some old writings envisaged the star as a very young protostar or a massive pre-main-sequence star with an age of only 1 Myr and typically a circumstellar disk. [15] It has probably evolved from a hot, dense O9 main sequence star of 5–20 R ☉ (solar radii).
The Pistol Star is over 25 times more massive than the Sun, and is about 1.7 million times more luminous. Considered a candidate LBV, but variability has not been confirmed. V4029 Sagittarii; V905 Scorpii [20] HD 6884, [21] (R40 in SMC) HD 269700, [7] [22] (R116 in the LMC) LBV 1806-20 in the 1806-20 cluster on the other side of the Milky Way.
KW Sagittarii is a red supergiant star, located approximately 2,420 parsecs (7,900 light-years) away from the Sun in the direction of the constellation Sagittarius.It is one of the largest known stars, with a diameter about 1,000 times larger than the Sun.
Rho Cassiopeiae (/ ˌ r oʊ k æ s i ə ˈ p iː aɪ,-s i oʊ-,-iː /; ρ Cas, ρ Cassiopeiae) is a yellow hypergiant star in the constellation Cassiopeia.It is about 8,150 light-years (2,500 pc) from Earth, yet can still be seen by the naked eye as it is over 300,000 times brighter than the Sun.
They are larger than the Sun but smaller than a red supergiant, with surface temperatures of 10,000–50,000 K and luminosities from about 10,000 to a million times that of the Sun. They are most often an evolutionary phase between high-mass, hydrogen-fusing main-sequence stars and helium-fusing red supergiants, [ 4 ] [ 5 ] [ 6 ] although new ...