List of largest stars

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The planets of our Solar System, including Earth compared to the Sun and other stars.

Below is an ordered list of the largest stars currently known by radius (half of the diameter). The unit of measurement used is the radius of the Sun (approximately 695,700 km; 432,288 mi).

The exact order of this list is very incomplete, as great uncertainties currently remain, especially when deriving various important parameters used in calculations, such as stellar luminosity and effective temperature. Often stellar radii can only be expressed as an average or within a large range of values. Values for stellar radii vary significantly in sources and throughout the literature, mostly as the boundary of the very tenuous atmosphere (opacity) greatly differs depending on the wavelength of light in which the star is observed.

Radii of several stars can be directly obtained by stellar interferometry. Other methods can use lunar occultations or from eclipsing binaries, which can be used to test other indirect methods of finding true stellar size. Only a few useful supergiant stars can be occulted by the Moon, including Antares and Aldebaran. Examples of eclipsing binaries include Epsilon Aurigae, VV Cephei, HR 5171, and the red-giant binary system KIC 9246715 in the constellation of Cygnus.[1]

File:Largest known stars.pdf - a PDF featuring a full list of stars with (disputed) rankings (some stars are not counted for notability reasons), spectral class, and constellation. To download the document for Adobe Acrobat Reader, right click the link and select "Save link as"; save it as an Adobe Acrobat Reader file. Further description here.

List[edit]

List of the largest stars
Star name Solar radii
(Sun = 1)
Star Type (Morgan-Keenan Class) Method[2] Image Notes
Orbit of Pluto 6,377–10,602 Reported for reference
Orbit of Neptune 6,411–6,526 Reported for reference
Orbit of Uranus 3,941–4,324 Reported for reference
VY Canis Majoris 2,200[3][4] Red Hypergiant (M) L/Teff VY Canis Majoris.jpg Candidate for the largest known star.[5] Once thought to be 3,000 D, making it outside of stellar evolutionary theory. Improved measurements have brought it down to size (see below).[6][3]
Red Supergiants of Westerlund 1 2,000[7] Red Supergiants/Hypergiants (M, K, G) Westerlund 1.jpg These red supergiants, other than Westerlund 1-26, are not yet properly identified, and cannot be hailed as the largest stars.
Orbit of Saturn 1,940–2,169 Reported for reference
VV Cephei A 1,900[8] Red Supergiant (M) Cepheus constellation crop VV Cephei location.png VV Cep A is a highly distorted star in a close binary system, losing mass to the secondary for at least part of its orbit. It is probably the largest star visible to the naked eye.
HIP 36623 1,800 Red Hypergiant (R) Celestia 1.6.1.
MY Cephei 1,750[9] Red Hypergiant (M) L/Teff NGC 7419 2MASS.jpg One of the coolest known red supergiants.
UY Scuti 1,708 ± 192[10] Red Hypergiant (M) AD UY Scuti zoomed in, Rutherford Observatory, 07 September 2014.jpeg Margin of error in size determination: ±192 D. At the smallest, it would have a size smaller than Westerlund 1-26 though a new distance estimate would make its size smaller than Betelgeuse (see below). Reported for reference
NML Cygni 1,650–2,770[11] Red Hypergiant (M) L/Teff CygOB2 med.jpg De beck et al. 2010 calculates 1,183 D,[12] although the quoted sizes were based on a more accurate measure of its distance combined with assumptions of its temperature.
V838 Monocerotis 1,570[13] Red Hypergiant (L)[14] V838 Mon HST.jpg Variable star that erupted rapidly in 2002. Likely the first L-type supergiant (or hypergiant).
VX Sagittarii 1,550[15] Red Hypergiant (M) L/Teff VX Sagittarii Red Supergiant Star.png VX Sgr is a pulsating variable with a large visual range and varies significantly in size from 1,120 D[15] to 1,940 D[16].
WOH G64 1,540±5%[17] (–1,730[18]) Red Hypergiant (M) L/Teff WOH G64.jpg This would be the largest star in the LMC, but is unusual in position and motion and might still be a foreground halo giant.
RW Cephei 1,535 [19][20](981 - 1,758)[21] Orange Hypergiant (K) L/Teff Star types T through O.png RW Cep is variable both in brightness (by at least a factor of 3) and spectral type (observed from G8 to M), thus probably also in diameter. Because the spectral type and temperature at maximum luminosity are not known, the quoted size is just an estimate. A radius of 981 D for 5,018 K or 1,758 D for 3,749 K.[22][19]
Westerlund 1-26 1,530-1,580[23] (–2,550) [24] Red Hypergiant (M) L/Teff Westerlund 1.jpg Very uncertain parameters for an unusual star with strong radio emission. The spectrum is variable but apparently the luminosity is not.
V354 Cephei (690[25]-) 1,520[8] Red Hypergiant (M) L/Teff Mukyv354.png
RSGC1-F02 1,498[26] Red Supergiant (M) L/Teff Betelgeuse at 68,842 AU.jpg
HD 143183 1,480[27] Red Hypergiant (M) L/Teff HD 143183.png
RSGC1-F01 1,435[26] Red Supergiant (M) L/Teff Betelgeuse at 68,842 AU.jpg
VY Canis Majoris[6] 1,420 ± 120[6] Red Hypergiant (M) AD VY Canis Majoris.jpg Based on Wittkowski et al model through a newly improved measurement although there is still considerable variation in estimates. Reported for reference
KY Cygni 1,420–2,850 [8] Red Hypergiant (M) L/Teff Mukyv354.png The upper estimate is due to an unusual K band measurement and thought to be an artifact of a reddening correction error, and is thought to be against stellar evolutionary theory. The lower estimate is consistent with other stars in the same survey and with theoretical models.
Mu Cephei (Herschel's "Garnet Star") 1,420[8] Red Hypergiant (M)[28] Mu Cep is the prototype of the obsolete class of the Mu Cephei variables (now considered as a semiregular variable), and is also the reddest star in the night sky.[29]
IRAS 04509-6922 1,360[30] Red Supergiant (M) L/Teff Betelgeuse at 68,842 AU.jpg
HV 888 1,353[31] L/Teff
HR 5171 A 1,315 ± 260,[32] 1,575 ± 400[33] Yellow Hypergiant (K) or Red Supergiant (M) AD HR 5171A.jpg HR 5171 A is a highly distorted star in a close binary system, losing mass to the secondary, and is also variable in temperature, thus probably also in size.[34] Traditionally, it is considered as the largest known yellow hypergiant (maybe an early K-type class),[35] although the latest research suggests it is a red supergiant with a slightly larger size of 1,490 ± 540 D.[36]
SMC 18136 1,310[37] Red Supergiant (M) Betelgeuse at 68,842 AU.jpg This would be the largest star in the SMC.
HIP 22552 1,300 Probably the largest S-type star existant in the Milky Way
J004424.94+412322.3 1,300[38] L/Teff Largest star in the Andromeda Galaxy
PZ Cassiopeiae 1,260-1,340,[39] 1,190-1,940[8] L/Teff The largest estimate is due to an unusual K band measurement and thought to be an artifact of a reddening correction error. The lowest estimate is consistent with other stars in the same survey and with theoretical models, and the intermediate ones have been obtained refining the distance to this star, and thus its parameters.
IRAS 5280-6910 1,260[30] L/Teff
WOH S341 1,258[31] L/Teff
LMC 136042 1,240[37]
BI Cygni 1,240[8] L/Teff Mauron et al. 2011 derive 123,000 L, which implies a size around 916 D.[25]
Westerlund 1-237 1,233[24] L/Teff
SMC 5092 1,220[37]
LMC 175464 1,200[37]
LMC 135720 1,200[37]
IRC-10414(RAFGL 2139) 1,200[40] RAFGL 2139 is a rare red supergiant companion to WR 114 that has a bow shock.
SMC 69886 1,190[37]
RSGC1-F05 1,177[26] L/Teff
EV Carinae 1,168[31]-2,880[41] L/Teff
RSGC1-F03 1,168[26] L/Teff
LMC 119219 1,150[37]
RSGC1-F08 1,146[26] L/Teff
BC Cygni 1,140[8]-1,230[42] L/Teff Other recent estimates range from 856 D to 1,553 D.[43]
LBV 1806-20 1,135[44] Blue Hypergiant (O, LBV) L/Teff LBV 1806-20.svg One candidate for the most luminous star in the Milky Way with a bolometric luminosity of up to two (or five) million solar luminosities.
J004035.08+404522.3 1,130[38] Red Supergiant (M) L/Teff Betelgeuse at 68,842 AU.jpg Localed in the Andromeda Galaxy
SMC 10889 1,130[37]
LMC 141430 1,110[37]
IRAS 04516-6902 1,100[30] L/Teff
LMC 175746 1,100[37]
RSGC1-F13 1,098[26] L/Teff
RT Carinae 1,090[8] L/Teff
Stephenson 2-18 1,086[45]–2,150[24] L/Teff
RSGC1-F04 1,082[26] L/Teff
LMC 174714 1,080[37]
LMC 68125 1,080[37]
SMC 49478 1,080[37]
SMC 20133 1,080[37]
Stephenson 2-49 1,074[45] L/Teff
V396 Centauri 1,070[8] L/Teff
SMC 8930 1,070[37]
Orbit of Jupiter 1,064–1,173 Reported for reference
HV 11423 1,060–1,220[46] Orange Hypergiant (K) L/Teff Betelgeuse at 68,842 AU.jpg HV 11423 is variable in spectral type (observed from K0 to M5), thus probably also in diameter. In October 1978, it was a star of M0I type.
CK Carinae 1,060[8] Red Supergiant (M) L/Teff
SMC 25879 1,060[37]
LMC 142202 1,050[37]
LMC 146126 1,050[37]
LMC 67982 1,040[37]
U Lacertae 1,022[25][47] VV Cephei-like binary star (M, B?) L/Teff
RSGC1-F11 1,015[26] Red Supergiant (M) L/Teff
W Persei 1,011[24] L/Teff
LMC 143877 1,010[37]
KW Sagittarii 1,009[10]-1,460[8] Red Supergiant (M) AD & L/Teff Margin of possible error: ±142 D.[10]
RSGC1-F12 1,005[24] Red Supergiant (M) L/Teff
SMC 46497 990[37]
LMC 140296 990[37]
RSGC1-F09 986[26] L/Teff
NR Vulpeculae 980[8] L/Teff
SMC 12322 980[37]
LMC 177997 980[37]
SMC 59803 970[37]
Westerlund 1-20 965[24] L/Teff
GCIRS 7 960[48]–1,000[49] AD At the galactic center. Margin of possible error: ±92 D[48] or ±150 D[49].
HV 2561 957[31] L/Teff
Betelgeuse (Alpha Orionis) 955 ± 217[50] AD Betelgeuse captured by ALMA.jpg Other recent estimates range from 887 ± 203 D[51] to 1,180 D[52]
SMC 50840 950[37] Betelgeuse at 68,842 AU.jpg
HV 916 944[31] L/Teff
RSGC1-F10 931[26] L/Teff
S Cassiopeiae 930[53][54]
IX Carinae 920[8] L/Teff
HV 2112 916[55] L/Teff HV 2112 Photo.gif Most likely candidate for a Thorne-Zytkow Object, although it may simply be an S-type, a red supergiant, or possibly a very luminous AGB star.
UY Scuti 916 AD UY Scuti zoomed in, Rutherford Observatory, 07 September 2014.jpeg The Gaia DR2 catalogue gives for UY Scuti a parallax of 0.6433 ± 0.1059 mas, which translates to a distance of 1550 ± 260 pc, much less than the 2900 ± 317 pc assumed for the size of 1,708 D. The new distance, if correct, means the radius of the star is just 916 D.[56] Reported for reference
RSGC1-F07 910[26] L/Teff Betelgeuse viewed from 8au.jpg
LMC 54365 900[37]
IRAS 04498-6842 900[57]-1,660[30] L/Teff
HV 996 894[31] L/Teff
NSV 25875 891[12] L/Teff
LMC 109106 890[37]
HV 12501 890[31] L/Teff
RSGC1-F06 885[26] L/Teff
Stephenson 2-03 883[45]–969[24] L/Teff
LMC 116895 880[37]
SMC 30616 880[37]
LMC 64048 880[37]
IRAS 05558-7000 880[30] L/Teff
J013508.78+303639.9 874[58] L/Teff A yellow hypergiant localed in the Triangulum Galaxy.
V437 Scuti 874[12] L/Teff
IRAS 04407-7000 870[30] L/Teff
IRAS 05329-6708 870[30] L/Teff
HV 986 867[31] L/Teff
V602 Carinae 860[8]-1,050[59] L/Teff & AD Margin of possible error: ±165 D.[59]
J004047.82+410936.4 860[38] L/Teff Localed in the Andromeda Galaxy
J004428.71+420601.6 860[38] L/Teff Localed in the Andromeda Galaxy
V669 Cassiopeiae 859[12] L/Teff
HV 2360 857[31] L/Teff
HV 5870 856[31] L/Teff
SMC 55681 850[37]
SMC 15510 850[37]
LMC 61753 830[37]
LMC 62090 830[37]
SMC 11709 830[37]
V1185 Scorpii 830[12] L/Teff
AD Persei 812[24] L/Teff
LMC 142199 810[37]
IRAS 05294-7104 810[30] L/Teff
Antares A (Alpha Scorpii A) 800[60] (vary by 165[61]) VLTI reconstructed view of the surface of Antares.jpg Antares A is red supergiant containing two spots on its surface.[62] Older estimates have given radii above 850 D,[63][64] but some are likely to have been affected by asymmetry of the atmosphere and the narrow range of infrared wavelengths observed.[65]
IRAS 05402-6956 800[30] L/Teff Betelgeuse viewed from 8au.jpg
LMC 134383 800[37]
Eta Carinae A (Tseen She) 800[66] Blue Hypergiant (O, LBV) EtaCarinae.jpg Previously thought to be the most massive single star, but in 2005 it was realized to be a binary system. During the Great Eruption, it was 1,400 D.[67] Older estimates gives 85–195 D.[68]
J013508.78+303639.9 799[58] Red Supergiant (M) L/Teff Betelgeuse viewed from 8au.jpg A yellow hypergiant localed in the Triangulum Galaxy.
V441 Persei 799[24] L/Teff
BU Persei 795[24] L/Teff
IRAS 05298-6957 790[30] L/Teff
BO Carinae 790[8] L/Teff
LMC 142907 790[37]
J004359.94+411330.9 785[38] L/Teff Localed in the Andromeda Galaxy
S Persei 780[8] - 2,853[69] Red Hypergiant (M) AD & L/Teff A red hypergiant localed in the Perseus Double Cluster. A large radius of 1,230 D is due to an unusual K band measurement and thought to be an artifact of a reddening correction error.
SU Persei 780[8] Red Supergiant (M) L/Teff The Double Cluster.jpg In the Perseus Double Cluster
RS Persei 770[70]-1,000[8] AD & L/Teff In the Perseus Double Cluster. Margin of possible error: ±30 D.[70]
AV Persei 770[8] L/Teff In the Perseus Double Cluster
J004124.80+411634.7 760[38] L/Teff Betelgeuse viewed from 8au.jpg Localed in the Andromeda Galaxy
V915 Scorpii 760[71][72] L/Teff
S Cephei 760[73] AD
YZ Persei 758[24] L/Teff
J004447.08+412801.7 755[38] L/Teff Localed in the Andromeda Galaxy
GP Cassiopeiae 751[24] L/Teff
Outer limits of the asteroid belt 750–900 Reported for reference
SMC 11939 750[37] Red Supergiant (M) Betelgeuse viewed from 8au.jpg
HD 303250 750[8] L/Teff
V382 Carinae 747[74] Yellow Hypergiant (G) V382 Carinae.jpg The brightest yellow hypergiant in the night sky, one of the rarest types of star. Achmad et al. 1992 calculates 600 D to 1,100 D or 700 ± 250 D.[75]
Stephenson 2-23 743[45] Red Supergiant (M) L/Teff Betelgeuse viewed from 8au.jpg
RU Virginis 740[76] L/Teff
LMC 137818 740[37]
SMC 48122 740[37]
Stephenson 2-09 736[45] L/Teff
IRAS 04545-7000 730[30] L/Teff
IRAS 05003-6712 730[30] L/Teff
SMC 56732 730[37]
KK Persei 724[24] L/Teff
V648 Cassiopeiae 710[8] L/Teff
XX Persei 710[77] L/Teff Located in the Perseus Double Cluster and near the border with Andromeda.
Stephenson 2-04 710[24] L/Teff
TV Geminorum 620-710[78] (–770)[8] L/Teff
Mercer 8-06 708[24] L/Teff
HD 179821 704[79] Yellow Hypergiant (A) Yellow dwarf.jpg A yellow hypergiant, although most authors consider it as a supergiant, a protoplanetary nebula or a post-AGB star with a luminosity of only 16,000 L.
J004255.95+404857.5 700[38] Red Supergiant (M) L/Teff Betelgeuse viewed from 8au.jpg Localed in the Andromeda Galaxy
LMC 169754 700[37]
LMC 65558 700[37]
V528 Carinae 700[8] L/Teff
RSGC1-F14 700[26] L/Teff
The following well-known stars are listed for the purpose of comparison.
Pi1 Gruis 694[80] Red Giant (N) AD The surface of the red giant star π1 Gruis from PIONIER on the VLT.jpg A red giant that contains giant bubbles on its surface.[81]
VY Canis Majoris[82] 600[82] Red Hypergiant (M) L/Teff VY Canis Majoris.jpg Based on Massey et al model, where the star would be a normal supergiant rather than a hypergiant, although most estimates give much larger sizes (see above). Reported for reference
CE Tauri 587–593[83] (–608[84]) Red Supergiant (M) AD 119 Tauri map (english).png Second reddest star in the night sky.[29] Can be occulted by the Moon, allowing accurate determination of its apparent diameter.
R Leporis (Hind's "Crimson Star") 400[85]–535[86] Red Giant (M) Lepus constellation map complemented.png Margin of possible error: ±90 D.[85]
CW Leonis 500[87]–700[88] Red Giant (M) L/Teff CW Leonis big melt.jpg CW Leonis is one of the mistaken identities as the claimed planet "Nibiru" or "Planet X", due to its brightness as it approaches 1st magnitude. Other estimates range from 390 D[87] to 826 D[12].
Rho Cassiopeiae 400-500[89] Yellow Hypergiant (F) Rho Cassiopeiae Sol VY Canis Majoris.png Yellow hypergiant, one of the rarest types of a star.
Mira A (Omicron Ceti) 332–402[90] Red Giant (M) AD RedGiantMiraAndHotCompanion.jpg Prototype Mira variable. De beck et al. 2010 calculates 541 D.[12]
HR 5171 Ab 312–401[32], 650 ± 150[33] Yellow Hypergiant (G) AD HR 5171A.jpg The yellow hypergiant companion of HR 5171 A.
V509 Cassiopeiae 400–900[91] Yellow Hypergiant (G) HD 69830 (Celestia).jpg Yellow hypergiant, one of the rarest types of a star.
Inner limits of the asteroid belt 380 Reported for reference
S Doradus 100-380[92] Blue Hypergiant (B, LBV) Lbv.png Prototype S Doradus variable, even though P Cygni was the first discovered.
R Doradus 370 ± 50[93] Red Giant (M) R Doradus ESO.jpg Star with the second largest apparent size after the Sun.
Tail of Comet Hyakutake 360 Reported for reference
IRC +10420 357[94]–1,342[12] Yellow Hypergiant (A) L/Teff IRC+10420.jpg A yellow hypergiant that has increased its temperature into the LBV range.
The Pistol Star 340[95] Blue Hypergiant (B) Pistol star and nebula (labeled).jpg Blue hypergiant, among the most massive and luminous stars known.
La Superba (Y Canum Venaticorum) 307[12]-390[96] Red Giant (N) L/Teff Y Canum Venaticorum.jpg Referred to as La Superba by Angelo Secchi. Currently one of the coolest and reddest stars.
Orbit of Mars 297–358 Reported for reference
Alpha Herculis (Ras Algethi) 284 ± 60[97] Red Giant (M) Hercules. Constelación.png Moravveji et al. 2013 also gives a range from 264 D to 303 D. At an estimated distance of 110 pc and an angular diameter of 34 mas, this corresponds to a radius of 400 ± 61 D.[97]
Sun's red giant phase 256[98] Sun Red Giant.jpg The core hydrogen would be exhausted in 5.4 billion years. In 7.9 billion years, The Sun would reach the tip of the red-giant branch of the Hertzsprung–Russell diagram. (see below)
Reported for reference
Orbit of Earth 215 (211–219) Reported for reference
Deneb (Alpha Cygni) 203 ± 17[99] Blue Supergiant (A) Deneb Sun comparison small.png Prototype Alpha Cygni variable.
Solar System Habitable Zone 200–520[100] (uncertain) Reported for reference
Orbit of Venus 154–157 Reported for reference
Epsilon Aurigae A (Almaaz) 143-358[101] Yellow Supergiant (F) Epsilon Aurigae.jpg ε Aur was incorrectly claimed in 1970 as the largest star with a size between 2,000 D and 3,000 D,[102] even though it later turned out not to be an infrared light star but rather a dusk torus surrounding the system.
Peony Star 92[103] Blue Hypergiant (W) Peony Nebula Star.jpg Candidate for the most luminous star in the Milky Way.
HIP 110703 (CT Gruis) 90 Red Giant (M) Celestia 1.6.1 NGC 4349-127 star in Celestia.png
Rigel A (Beta Orionis A) 78.9[104]–115[105] Blue Supergiant (B) Rigel blue supergiant.jpg Margin of possible error: ±7.4 D.[104]
Canopus (Alpha Carinae) 71 ± 4[106] Yellow Supergiant (F) Vela and Surrounding Constellations (ground-based image).jpg Second brightest star in the night sky.
Orbit of Mercury 66–100 Reported for reference
Aldebaran (Alpha Tauri) 44.13 ± 0.84[107] Red Giant (K) AD Aldebaran-Sun comparison-ca.svg
Polaris (Alpha Ursae Minoris) 37.5[108] Yellow Supergiant (F) Polaris alpha ursae minoris.jpg The current northern pole star.
R136a1 28.8[109]–35.4[110] Blue Hypergiant (W) R136a1.jpg Also on record as the most massive and luminous star known (265 - 315 M and 8.71 million L).
Arcturus (Alpha Boötis) 25.4 ± 0.2[111] Red Giant (K) Arcturus-star.jpg Brightest star in the northern hemisphere.
HDE 226868 20-22[112] Blue Supergiant (O) Cygnus X-1.png The supergiant companion of black hole Cygnus X-1. The black hole is 500,000 times smaller than the star.
Albireo Aa 16 Yellow Giant (K) NewAlbireo.jpg Primary giant star of a star system.
VV Cephei B 13[113]-25[114] Blue Main-Sequence Star (B) VV Cephei eclipsing binary B front (german).png The B-type main sequence companion of VV Cephei A.
Sun's helium burning phase 10 ??? After the red-giant branch the Sun has approximately 120 million years of active life left.
Reported for reference
Pollux (Beta Geminorum) 8 Orange Subgiant (K) Pollux-Sun comparison.png
Sirius (Alpha Canis Majoris) 1.711 White Main-Sequence Star (A) Sirius A and B Hubble photo.jpg
Sun 1 Yellow dwarf (G) The Sun by the Atmospheric Imaging Assembly of NASA's Solar Dynamics Observatory - 20100819.jpg The largest object in the Solar System.
Reported for reference

Timeline of largest star recordholders[edit]

Star Size (D) Current given radius

(D)

Date Notes
VY Canis Majoris 2,200 2018—........
UY Scuti 1,708 ± 192[115] 916 - 1,708 ± 192 2014—2018 Margin of error in size determination: ± 192 solar radii. With its smallest value, its size would be smaller than the upper estimate of V354 Cephei (1,520) with 1,516 solar radii. With its larger value, its size would be similar to VV Cephei A's maximum size with 1,900 solar radii.
Westerlund 1-26 2,550[116][117][118] 1,530 - 2,550 2013—2014 Very uncertain parameters for an unusual star with strong radio emission. The spectrum is variable but apparently the luminosity is not.
NML Cygni 2,775[119] 1,640 (1,183-2,770) 2012—2013
VY Canis Majoris 2,200 2007—2012
VV Cephei A 1,900[120] [foot 1] 1998—2007 VV Cep A is a highly distorted star in a binary system, losing mass to its B-type companion VV Cephei B for at least part of its orbit.
R Cassiopeiae 1,800 500 ???
Betelgeuse[121] ~1,180[122][123] 950 2001
Mu Cephei 1,420 1970—1998
Epsilon Aurigae A & B 3,000 143 - 358 ........—1970 For instance, apparently Epsilon Aurigae was hailed as the largest known star, incorrectly attributed to being a star, in 1970.
Largest known yellow stars:
HR 5171[124] 1,315 + 260,[125] 1,490 + 540[126] 2014—...... The star's real status is disputed. The upper estimate given by Wittowski et al gives a cool temperature, giving it the classification of a red supergiant.
V382 Carinae[127] 747 ........—2014

See also[edit]


References[edit]

  1. Hełminiak, K.G.; Ukita, N.; Kambe, E.; Konacki, M. (2015). "Absolute Stellar Parameters of KIC 09246715: A Double-giant Eclipsing System with a Solar-like Oscillator". The Astrophysical Journal Letters 813 (2): L25. arXiv:1509.03340. Bibcode 2015ApJ...813L..25H. doi:10.1088/2041-8205/813/2/L25.
  2. {{{1}}}
  3. 3.0 3.1 Choi, Yoon Kyung et al. (2008). "Distance to VY CMa with VERA". Publications of the Astronomical Society of Japan (Publications Astronomical Society of Japan) 60 (5): 1007. arXiv:0808.0641. Bibcode 2008PASJ...60.1007C. doi:10.1093/pasj/60.5.1007.
  4. According to Alcolea et al. 2013's paper, VY Canis Majoris is claimed as the largest known star, although the paper quotes the size given by Wittkowski et al.. Older estimates have given much larger sizes like 1,800–2,100 D (given by Humphreys et al. 2006) based on older distance (1.5 kpc) and luminosity (>400,000 L) estimates, but most of them are obsolete comparing to distance (<1.2 kpc) and luminosity (~300,000 L) estimates from 2008 and 2012. Since VY CMa has been described as "the largest known star" according to Alcolea et al. 2013's paper, it is currently at the top with a quoted size of approximately 2,200 solar radii (1.5×109 km; 10 au), which was derived from the luminosity of 350,000 L and a low possible temperature of 3,000 K that have been given by Choi et al. 2008 ('"`UNIQ--postMath-00000001-QINU`"'), although the newer size given by Wittkowski et al. was still included in the list for comparison.
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