List of largest stars

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List of the largest known stars in the Milky WayTemplate:Efn
Star name Solar radii
(Sun = 1)
MethodTemplate:Efn Notes
Orbit of Saturn 2,0472,049.9[1]Template:Efn Reported for reference
UY Scuti 1,708±192[2] AD The radius of UY Sct is more extreme than what current stellar evolution models predict. One paper mentions this extremity, and the reason for it is not yet clear.[3]
V354 Cephei 1,520±304[4] L/Teff
The above radii are larger than what stellar evolution theory predicts, and are thus potentially unreliable
Theoretical limit of star size (Milky Way) ~1,500[4] This value comes from the rough average radii of the three largest stars studied in the paper. It is consistent with the largest possible stellar radii predicted from the current evolutionary theory, and it is believed that stars above this radius would be too unstable and simply do not form.[4]
Reported for reference
VY Canis Majoris 1,420±120[5] L/Teff & AD
KY Cygni 1,420±284(–2,850±570)[4] L/Teff
AH Scorpii 1,411±124[2] AD
Westerlund 1 W237 (Westerlund 1 BKS B) 1,241±70[6] L/Teff
BC Cygni 1,230.27[7]1,140±228[4] L/Teff A more detailed but older study gives values of 1,081 Template:Solar radius (8561,375) for the year 2000, and 1,303 Template:Solar radius (1,0211,553) for the year 1900.[8]
IRC -10414 ~1,200[9] L/Teff
PZ Cassiopeiae 1,190±238(–1,940±388)[4] L/Teff
V1489 Cygni (NML Cygni) 1,183[10] L/Teff
GCIRS 7 1,170±60[11]1,368[12] AD
Westerlund 1 W26 (Westerlund 1 BKS AS) 1,165±581,221±120[6] L/Teff
Orbit of Jupiter 1,114.51,115.8[1]Template:Efn Reported for reference
RT Carinae 1,090±218[4] L/Teff
V396 Centauri 1,070±214[4] L/Teff
CK Carinae 1,060±212[4] L/Teff
V602 Carinae 1,050±165[13] AD
VV Cephei A 1,050[14] AD
KW Sagittarii 1,009±142[2] AD
IX Carinae 920±184[4] L/Teff
CD Hydri 920[15] ?
AZ Cygni 911+57
−50
[16]
AD
NSV 25875 891[10] L/Teff
V437 Scuti 874[10] L/Teff
LL Pegasi 869[10] L/Teff
V669 Cassiopeiae 859[10] L/Teff
Westerlund 1 W20 (Westerlund 1 BKS D) 858±48[6] L/Teff
VX Sagittarii 853[10]-1,335±215[17] L/Teff
BI Cygni 851.14[7]1,240±248[4] L/Teff
μ Cephei (Herschel's Garnet Star) 830[10]-972±228[18] AD
V1185 Scorpii 830[10] L/Teff
CW Leonis 826[10] L/Teff
LP Andromedae 815[10] L/Teff
RT Ophiuchi 801±217[19] AD
BO Carinae 790±158[4] L/Teff
S Persei 780±156(–1,230±246)[4] L/Teff
SU Persei 780±156[4] L/Teff
RS Persei 770±30[20] AD
V355 Cephei 770±154[4] L/Teff
Betelgeuse (α Orionis) 764+116
−62
[21]
? Tenth brightest star in the night sky.[22]
HD 303250 750±150[4] L/Teff
UU Pegasi 742±193[19] AD
Westerlund 1 W75 (Westerlund 1 BKS E) 722±36[6] L/Teff
V Camelopardalis 716±185[19] AD
V648 Cassiopeiae 710±142[4] L/Teff
V528 Carinae 700±140[4] L/Teff
V821 Herculis 686[10] L/Teff
Antares (α Scorpii) 680[23] AD Fourteenth brightest star in the night sky.[22]
RW Cygni 676.08[7]980±196[4] L/Teff
HD 95687 674±109[13] AD
6 Geminorum (BU Geminorum) 670±134[4] L/Teff
V441 Persei 650±130[4] L/Teff
RR Aquilae 648±169[19] AD
TZ Cassiopeiae 645.65[7]800±160[4] L/Teff
RW Leonis Minoris 641[10] L/Teff
3XMM J174347.4-292309 640[24] ?
V349 Carinae 640±128[4] L/Teff
R Hydrae 631[10] L/Teff
NO Aurigae 630±126[4] L/Teff
V1749 Cygni 620±124(–1,040±208)[4] L/Teff
TV Geminorum ~620710[25] L/Teff
BU Persei 620±124[4] L/Teff
W Persei 620±124[4] L/Teff
R Sculptoris 617[10] L/Teff
NV Aurigae 615[10] L/Teff
V589 Cassiopeiae 610±122[4] L/Teff
U Arietis 610±125[26] - 801±205[19] AD
V Hydrae 609[10] L/Teff
X Pavonis 608[10] L/Teff
S Serpentis 601±159[19] AD
MZ Cassiopeiae 600±120[4] L/Teff
RR Persei 599±161[19] AD
V419 Cephei 590±118[4] L/Teff
V356 Cephei 590±118[4] L/Teff
119 Tauri (CE Tauri) 587±85593±86[27] AD
4U 1954+31 586+188
−127
[28]
L/Teff
RS Virginis 577±155[19] AD
RU Herculis 572±147[19] AD
GU Cephei 570±114[4] L/Teff
R Leonis Minoris 569±146[19] AD
TX Camelopardalis 560[10] L/Teff
MM Virginis 554[15] ?
II Lupis 547[10] L/Teff
S Orionis 545±142[19] AD
Mira A (ο Ceti) 541[10] L/Teff
V361 Carinae 540±108[4] L/Teff
V1300 Aquilae 529[10] L/Teff
YZ Persei 524±175[29]540±108[4] AD & L/Teff
V774 Cassiopeiae 520±104[4] L/Teff
WX Piscium 520[10] L/Teff
R Draconis 511±142[19] AD
T Persei 510±20[20] AD
V2099 Cygni 509[15] ?
V1427 Aquilae 507[10] L/Teff
V384 Puppis 500±100(–850±170)[4] L/Teff
HR Carinae B 500±150[30] AD
DG Cygni 499±140[19] AD
RT Capricorni 490±70[31] AD
R Pegasi 476±122[19] AD
V Cassiopeiae 472±129[19] AD
BS Aurigae 470±110[31] AD
V838 Monocerotis 464[32]–730[33] ? & AD
NSV 24761 467[10] L/Teff
S Pegasi 459±135[19] AD
AD Persei 457.09[7] L/Teff
S Coronae Borealis 457±116[19] AD
IK Tauri (NML Tauri) 451[10] L/Teff
π1 Gruis 447[10] L/Teff
V910 Centauri 440±88[4] L/Teff
AW Aurigae 440±100[31] AD
R Aquarii 438±114[19] AD
U Herculis 431±114[19] AD
3XMM J185210.0+001205 430[24] ?
NR Vulpeculae 426.58[7]980±196[4] L/Teff
V778 Cassiopeiae 420±84[4] L/Teff
Unurgunite (σ Canis Majoris) 420±84[4] L/Teff
V810 Centauri 420[34] L/Teff
W Aquilae 419[10] L/Teff
T Cassiopeiae 416±108[19] AD
Y Cassiopeiae 413±110[19] AD
V634 Cassiopeiae 410±82[4] L/Teff
V809 Cassiopeiae 410±82[4] L/Teff
R Cassiopeiae 410[10] - 593±181[19] L/Teff & AD
R Aurigae 407±105[19] AD
PR Persei 405±137[29] AD
NX Serpentis 403[10] L/Teff
V Cygni 402[10] L/Teff
U Hydrae 395[10] L/Teff
S Scuti 386[10] L/Teff
V439 Persei 380±76[4] L/Teff
V403 Persei 380±76[4] L/Teff
Westerlund 1 W243 (Westerlund 1 BKS G) 376.9[35] ?
U Orionis 370±96[19] AD
RZ Sagittarii 363[10] L/Teff
BD+59 274 360±72[4] L/Teff
HD 17958 360±72[4] L/Teff
BG Serpentis 354±124[19] AD
R Aquilae 354±99[19] AD
U Persei 352±101[19] AD
V362 Aurigae 351±159[29]500±100[4] AD & L/Teff
V4650 Sagittarii 350[36] ?
RX Bootis 347[10] L/Teff
V1057 Scorpii 342[15] ?
V466 Cassiopeiae 331.13[7]380±76[4] L/Teff
R Serpentis 328±86[19] AD
U Antliae 325[10] L/Teff
FZ Persei 323.59[7] L/Teff
Orbit of Mars 322323.1[1]Template:Efn Reported for reference
V743 Cassiopeiae 322±113[29] AD
FG Vulpeculae 321±129[29] AD
HD 306799 320±64[4] L/Teff
Z Scorpii 320±100[26] AD
5 Lacertae (V412 Lacertae) 319.2+26.6
−32.0
[37]
AD
X Ophiuchi 314±81[19] AD
T Ceti 312[10] L/Teff
GLMP 1048 311[10] L/Teff
Z Pegasi 310±92[19] AD
Y Canum Venaticorum (La Superba) 307[10] L/Teff
Pistol Star (V4647 Sagittarii) 306[36] ?
RT Aquilae 305±79[19] AD
V368 Andromedae 303.12±32.05[38] AD
V550 Persei 301±99[29] AD
R Leonis 299[10] - 409±105[19] AD & L/Teff
R Doradus (P Doradus) 298±21[39] AD
BD+28 697 296.93±41.26[38] AD
S Ursae Minoris 296±82[19] AD
EP Aquarii 291[10] L/Teff
BD+59 372 290±58[4] L/Teff
V438 Ophiuchi 286[10] L/Teff
Rasalgethi (α Herculis) 284±60 (264303)[40] L/Teff
ο1 Canis Majoris 280±56[4] L/Teff
R Canum Venaticorum 279±75[19] AD
V643 Persei 279[15] ?
41 Geminorum 266±82[29] AD
R Aquilae 259±67[19] AD
HD 9366 254±73[29] AD
V424 Lacertae 239±80[29]260±52[4] AD & L/Teff
BG Cygni 236±76[19] AD
HD 207119 235±92[29] AD
SW Cephei 234.42[7] L/Teff
V2361 Ophiuchi 234[15] ?
W Hydrae 229[10] L/Teff
Cygnus OB2 #12 229[41] L/Teff
HD 4817 227±73[29] AD
OT Hydrae 222[15] ?
HR Carinae A 220±60[30] AD
Wezen (δ Canis Majoris) 215±66[42] AD Thirty-sixth brightest star in the night sky.[22]
Orbit of Earth (~1 AU) 214[1]Template:Efn Reported for reference
HD 11092 214±56[29] AD
Enif (ε Pegasi) 210.37 – 210.69[43] ?
AE Trianguli 210.18±15.09[38] AD
CY Canum Venaticorum 208.23±13.07[38] AD
MV Delphini 205[15] ?
ZZ Canis Minoris 204.16±23.68[38] AD
Deneb (α Cygni) 203±17[44] ? Eighteenth brightest star in the night sky.[22]
HD 205349 200±40[4] L/Teff
HD 236947 200±84[29] AD
The following stars with sizes below Template:Solar radius are shown for comparison.
Orbit of Venus 158.6[1]Template:Efn Reported for reference
Orbit of Mercury 82.984.6[1]Template:Efn Reported for reference
Vega (α Lyrae) 2.726±0.006 × 2.418±0.012[45] Fifth brightest star in the night sky.[22]
Reported for reference
Sun 1 The largest object in the Solar System.
Reported for reference

Other galaxies (within the Local Group)[edit]

List of the largest known stars in other galaxies (within the Local Group)
Star name Solar radii
(Sun = 1)
Galaxy MethodTemplate:Efn Notes
Sextans A 10 995±130[46] Sextans A L/Teff
Sextans A 5 870±145[46] Sextans A L/Teff
Sextans A 7 710±100[46] Sextans A L/Teff
IC 10 3 685±90[46] IC 10 L/Teff
WLM 14 610±80[46] WLM L/Teff
Sextans B 1 565±70[46] Sextans B L/Teff
IC 1613 2 560±70[46] IC 1613 L/Teff
WLM 12 430±70[46] WLM L/Teff
IC 10 5 420±50[46] IC 10 L/Teff
Sextans B 2 405±90[46] Sextans B L/Teff
WLM 13 380±50[46] WLM L/Teff
Sextans A 6 350±40[46] Sextans A L/Teff
Pegasus 1 340±50[46] Pegasus Dwarf L/Teff
Sextans A 4 335±40[46] Sextans A L/Teff
WLM 11 310±50[46] WLM L/Teff
IC 1613 1 300±40[46] IC 1613 L/Teff
IC 10 2 280±30[46] IC 10 L/Teff
Pegasus 2 260±40[46] Pegasus Dwarf L/Teff
Sextans A 8 260±60[46] Sextans A L/Teff
Sextans A 9 230±50[46] Sextans A L/Teff
IC 10 4 200±25[46] IC 10 L/Teff
IC 10 1 165±60[46] IC 10 L/Teff
IC 10 6 160±25[46] IC 10 L/Teff
Phoenix 3 90±15[46] Phoenix Dwarf L/Teff

Outside the Local Group[edit]

List of the largest known stars in galaxies outside the Local Group
Star name Solar radii
(Sun = 1)
Galaxy Group MethodTemplate:Efn Notes
NGC 2363-V1 194356[47] NGC 2363 M81 Group ?

References[edit]

Taken from List of largest stars at Wikipedia, licensed under the Creative Commons Attribution-Sharealike 3.0 Unported License. All authors are listed here.

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  4. 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.27 4.28 4.29 4.30 4.31 4.32 4.33 4.34 4.35 4.36 4.37 4.38 4.39 4.40 4.41 4.42 4.43 4.44 4.45 4.46 4.47 4.48 4.49 4.50 4.51 4.52 Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (August 2005). "The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought". The Astrophysical Journal. 628: 973–985. arXiv:astro-ph/0504337. Bibcode:2005ApJ...628..973L. doi:10.1086/430901. ISSN 0004-637X.
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  19. 19.00 19.01 19.02 19.03 19.04 19.05 19.06 19.07 19.08 19.09 19.10 19.11 19.12 19.13 19.14 19.15 19.16 19.17 19.18 19.19 19.20 19.21 19.22 19.23 19.24 19.25 19.26 19.27 19.28 19.29 19.30 19.31 19.32 19.33 19.34 19.35 Van Belle, G. T.; Thompson, R. R.; Creech-Eakman, M. J. (2002). "Angular Size Measurements of Mira Variable Stars at 2.2 Microns. II". The Astronomical Journal. 124 (3): 1706–1715. arXiv:astro-ph/0210167. Bibcode:2002AJ....124.1706V. doi:10.1086/342282. S2CID 33832649.
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