O
Stellar classification

O
Effective temperature
≥ 25,000 K
Solar radius
≥ 6.6 R☉
Solar mass
≥ 16 M☉

An O-type main-sequence star (O V) is a main-sequence (core hydrogen-burning) star of spectral type O and luminosity class V. These stars have between 15 and 90 times the mass of the Sun and surface temperatures between 30,000 and 52,000 K. They are between 30,000 and 1,000,000 times as luminous as the Sun. These stars are rare; it is estimated that there are no more than 20,000 in the entire Milky Way. Examples include σ Orionis A and 10 Lacertae.

Uses material from the Wikipedia article "O-type main-sequence star", which is released under the Creative Commons BY-SA 3.0.
Astronomical object DistanceWiki
10 LacertaeStar, Double or multiple star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO1726[x]
AlnitakStar, Double or multiple star, Emission-line Star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO736[x]
AlniyatStar, Double or multiple star, Star in Nebula, Variable Star of beta Cep type, HII region, Infra-Red source, Interstellar matter, Radio-source, Reflection nebula, Spectroscopic binary, UV-emission source, Variable StarO474[x]
BD+50 2869Star, Emission-line Star, Galaxy, Infra-Red source, Planetary Nebula, UV-emission source, Variable StarO2000[x]
BD-12 1172Star, centimetric Radio-source, Emission-line Star, Infra-Red source, Nova, Planetary Nebula, Radio-source, sub-millimetric source, UV-emission source, Variable StarO1100[x]
Eta CarinaeStar, Double or multiple star, Star in double system, Star in Cluster, Emission-line Star, gamma-ray source, Infra-Red source, Nova, Radio-source, Blue supergiant, sub-millimetric source, UV-emission source, Variable Star, X-ray sourceO7700[x]
GCRV 4981Star, Emission-line Star, Infra-Red source, Planetary Nebula, Radio-source, Variable StarO800[x]
HD 218915Star, Infra-Red source, Blue supergiant, Spectroscopic binary, UV-emission sourceO2490[x]
HR 8281Star, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Open cluster, Spectroscopic binary, UV-emission source, X-ray sourceO1977[x]
IRAS 21565-3937Galaxy, Infra-Red source, Planetary NebulaO3000[x]
MenkibStar, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, UV-emission source, Variable Star, X-ray sourceO1245[x]
QZ CarinaeStar, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type , Infra-Red source, Spectroscopic binary, UV-emission source, Variable Star, X-ray sourceO1953[x]
Sigma OrionisStar, Double or multiple star, Star in Cluster, Infra-Red source, Spectroscopic binary, UV-emission source, Variable Star, X-ray sourceO1148[x]
V1357 CygniStar, Star in Association, Herbig Ae/Be star, Black Hole, Ellipsoidal variable Star, gamma-ray source, High Mass X-ray Binary, Infra-Red source, Blue supergiant, Spectroscopic binary, Variable Star, X-ray sourceO7500[x]
X PerseiStar, Double or multiple star, Herbig Ae/Be star, Be Star, Emission-line Star, gamma-ray source, High Mass X-ray Binary, Infra-Red source, Confirmed Neutron Star, Pulsar, Spectroscopic binary, UV-emission source, Variable Star, X-ray sourceO1394[x]
Zeta PuppisStar, Variable of BY Dra type, Emission-line Star, Infra-Red source, Pulsating variable Star, Radio-source, UV-emission source, Variable Star, X-ray sourceO1083[x]
2MASS J02321086+6133080Star, Star in Association, Star in Cluster, Infra-Red source, Young Stellar ObjectO5982
2MASS J02340253+6123108Star, Star in Association, Star in Cluster, Infra-Red source, Young Stellar ObjectO5969
BD+33 1025Star, Star in Association, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO824
BD+56 556Star, Double or multiple star, Star in Cluster, Infra-Red sourceO7672
CD-24 13785Star, Double or multiple star, Star in Cluster, Infra-Red sourceO4395
CD-41 11037Star, Star in Cluster, Infra-Red source, Spectroscopic binary, Variable Star, X-ray sourceO4049
CD-58 3526Star, Star in Cluster, Infra-Red source, X-ray sourceO8903
Cl Pismis 24 1Star, Double or multiple star, Star in double system, Star in Cluster, Infra-Red source, X-ray sourceO8150
CPD-58 2625Star, Star in Cluster, Infra-Red source, Open cluster, X-ray sourceO8900
CPD-59 2591Star, Double or multiple star, Star in Cluster, Infra-Red source, Open cluster, X-ray sourceO8227
CPD-59 2626Star, Star in Cluster, Infra-Red source, Open cluster, X-ray sourceO8248
CPD-62 2198Star, Star in Cluster, Infra-Red sourceO5895
HD 101333Star, Star in Cluster, Infra-Red source, UV-emission sourceO5850
HD 12993Star, UV-emission source, Variable StarO2435
HD 148937Star, Double or multiple star, Emission-line Star, Emission Object, Galaxy, HII region, Infra-Red source, Interstellar matter, Planetary Nebula, Spectroscopic binary, UV-emission source, Variable Star, X-ray sourceO1388
HD 152200Star, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO4032
HD 152233Star, Double or multiple star, Star in Cluster, Infra-Red source, Spectroscopic binary, Variable Star, X-ray sourceO4009
HD 152314Star, Double or multiple star, Star in Cluster, Infra-Red source, Variable Star, X-ray sourceO4191
HD 15570Star, Star in Association, Star in Cluster, Emission-line Star, Infra-Red source, Variable StarO2104
HD 155889Star, Double or multiple star, Infra-Red source, UV-emission sourceO2718
HD 167971Star, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type , Emission-line Star, Infra-Red source, Blue supergiant, UV-emission source, Variable Star, X-ray sourceO2160
HD 168137Star, Star in Cluster, Infra-Red source, Spectroscopic binary, X-ray sourceO1394
HD 171198Star, Infra-Red source, UV-emission sourceO1365
HD 17520Star, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Variable StarO7766
HD 193443Star, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceO3546
HD 206183Star, Double or multiple star, Star in Cluster, Infra-Red source, Open cluster, UV-emission sourceO2039
HD 215835Star, Double or multiple star, Star in Association, Star in Cluster, Ellipsoidal variable Star, Infra-Red source, Spectroscopic binary, UV-emission source, Variable Star, X-ray sourceO5018
HD 216898Star, Star in Association, Association of Stars, Infra-Red source, UV-emission sourceO1930
HD 217086Star, Double or multiple star, Star in Association, Association of Stars, Infra-Red source, X-ray source, Young Stellar Object Candidate, Young Stellar ObjectO1424
HD 308813Star, Star in Cluster, Infra-Red sourceO5826
HD 308816Star, Star in Cluster, Infra-Red sourceO5827
HD 308818Star, Star in Cluster, Infra-Red sourceO5965
HD 312074Star, Star in Cluster, Infra-Red sourceO6478
HD 315023Star, Star in Cluster, Infra-Red sourceO4311
HD 75222Star, Infra-Red source, Blue supergiant, UV-emission sourceO2364
HD 8768Star, Double or multiple star, Star in ClusterO8583
HD 91983Star, Star in Cluster, Infra-Red sourceO7546
HD 99897Star, HII region, Infra-Red sourceO1802
HERSCHEL 36Star, Double or multiple star, Star in Cluster, Infra-Red source, Spectroscopic binary, Variable Star, Young Stellar Object CandidateO4500
HIP 101341Star, Double or multiple star, Star in Association, Star in Cluster, Eclipsing binary of beta Lyr type , Emission-line Star, Infra-Red source, Blue supergiant, Spectroscopic binary, Variable Star, X-ray sourceO2146
HIP 102167Star, Infra-Red sourceO2363
HIP 11792Star, Star in Association, Star in Cluster, Infra-Red source, Young Stellar ObjectO1236
HIP 17113Star, Double or multiple star, Infra-Red sourceO635
HIP 172Star, Star in Cluster, Infra-Red sourceO2861
HIP 18175Star, Infra-Red sourceO968
HIP 23527Star, Infra-Red sourceO813
HIP 26889Star, Infra-Red source, Spectroscopic binaryO965
HIP 28711Star, Infra-Red sourceO355
HIP 29216Star, Infra-Red source, UV-emission source, X-ray sourceO994
HIP 40430Star, Infra-Red source, Nova-like Star, Nova, High proper-motion Star, Spectroscopic binary, UV-emission source, Variable Star, X-ray sourceO315
HIP 82691Star, Double or multiple star, Star in Cluster, Eclipsing binary of beta Lyr type , Emission-line Star, Infra-Red source, Blue supergiant, Spectroscopic binary, Variable Star, X-ray sourceO4056
HIP 89743Star, Star in Cluster, Infra-Red source, X-ray sourceO1371
HR 6272Star, Double or multiple star, Star in Cluster, Emission-line Star, Infra-Red source, Blue supergiant, UV-emission source, Variable Star, Wolf-Rayet StarO2265
HR 7767Star, Double or multiple star, Infra-Red source, UV-emission source, X-ray sourceO1941
lam01 OrionisStar, Double or multiple star, Emission-line Star, Infra-Red source, UV-emission source, X-ray sourceO1440
TYC 3694-1331-1Star, Star in Association, Star in Cluster, Association of Stars, Be Star, Emission-line Star, Infra-Red sourceO7680
V1034 ScorpiiStar, Double or multiple star, Star in Cluster, Eclipsing binary of Algol type , Eclipsing binary, Infra-Red source, Spectroscopic binary, Variable Star, X-ray sourceO4157
V1292 ScorpiiStar, Star in Cluster, Eclipsing binary of Algol type , Infra-Red source, Spectroscopic binary, Variable Star, X-ray sourceO4102