List of the most massive stars

R136a1 is the largest known star by MASS. R136a1 is approximately 320 solar masses - that means R136a1 is approximately 320 times the mass of our Sun.

VY Canis Majoris is the largest known star by SIZE. VY Canis Majoris is approximately 2000 times the diameter of our Sun. CM is only 25 solar masses.

 

Known stars with an estimated mass of 20 or greater solar masses:

Star name Solar mass
R136a1 [1] 265320
Peony Nebula Star 175
HD 269810 150
Eta Carinae 150--300
HD 93129A 125
The Pistol Star 80150
LBV 1806-20 130200
HD 93129 A + B[2][3] A=120, B=80
HD 93250 118
NGC 3603-A1 A=116, B=89
Pismis 24-1 A + B[4][5] A=100120, B=100
Arches cluster[6][7][8] Many stars, 100130
Pismis 24-17[5] 100
S Doradus 100
Cygnus OB2-12 92
WR20 a + b[9]
Melnick 42[10][11][12] 80100
HD 97950[13][14] 80
Sk-71 51[15] 80
R 66 70
Companion to M33 X-7[16] 70
LH54-425 A + B[17] A=62, B=37
Var 83 in M33[18] 6085
Sher 25 in NGC 3603[19] 60
Zeta-1 Scorpii[20] 60
Zeta Puppis[21] 59
WR22[22] 5574
Plaskett A + B[23][24] A=43, B=51
AG Carinae 50
WR102c[25] 4555
IRS-8*[26] 44.5
HD 5980 A + B[27][28][29] A=4062, B=30
Epsilon Orionis 40
HD 148937[30][31] 40
IRAS 05423-7120[15] 40
Rho Cassiopeiae 40
Theta1 Orionis C 40
Xi Persei[32] 40
Companion to NGC300 X-1[33] 38
Cluster R136a 12 stars, all 3776
Chi2 Orionis[34] 3540
Companion to IC10 X-1[35] 35
VY Canis Majoris[36][37] 3040
Gamma Velorum A 30
P Cygni 30
R 126 30
Zeta Orionis 28
IRS 15[38] 26
VV Cephei 2540
Alpha Camelopardalis[39][40] 2530
6 Cassiopeiae[41][42] 25
EZ Canis Majoris 25
KY Cygni[43] 25
Mu Cephei 25
V509 Cassiopeiae 25
NGC 7538 S[44] 2040
Alpha Orionis (Betelgeuse) 20
S Monocerotis A[45] 1830
WR47 848

[edit] Black holes

Black holes are the end point evolution of massive stars. Technically they are not stars, as they no longer generate nuclear fusion in their cores.