List of O-type stars


This is a list of O-type stars by their distance from Earth.

List

Magellanic Clouds

The Large Magellanic Cloud is around 163 kly distant and the Small Magellanic Cloud is around 204 kly distant
Host galaxyStar systemMedian distance Stars in systemSpectral typeApparent magnitude Comments and references
LMCR126a4157,000103V)
LMCR136a5157,000102lf*
LMCR136a6157,000102If*p
LMCR136a8157,000102-3V
LMCLH 10-3209 A160,0001O3IIIPart of NGC 1763.
LMCMelenick 39 A160,000102.5If/WN6
LMCSk -65° 47160,0001O4If
LMCSk -68° 137160,0001OB
LMCSk -69° 212160,000106lf
LMCSk -69° 249 A160,000207lf
LMCST5-31160,000102-3fp
LMCTIC 276934932160,0002O3If + O6V
LMCR136a7163,000103III
LMCMACHO 80.7443.1718 B163,0002O9.5 V13.628Has a B-type companion.
LMCR136b163,0001O4If13.24
LMCLH 54-425163,0002O3V + O5V13.13
LMCHD 269810163,0001O2III12.22
LMCHSH95-36163,000102 lf*
LMCMelnick 42163,0001O2If*12.78Part of Tarantula Nebula.
LMCLMC P3163,0002O5IIIHas a Neutron Star companion.
LMCMACHO*05:34:41.3−69:31:39163,0002O3If* + O6V
LMCBI 253164,0001O2V-III)13.76
LMCVFTS 243 164,0001O7V)15.26Has a Known Black Hole Companion
LMCVFTS 102164,0001O9:Vnnne15.806
LMCVFTS 352164,0002O4.5 V):z: + O5.5 V):z:14.38
LMCVFTS 506164,00010N2V))
LMCVFTS 621164,000102V)z
LMCVFTS 1021164,000104 lf+
LMCVFTS 16170,0001O2IIIf*
LMCLMC X-1 A180,0002O8 IIIf or O8 f?p14.612 ± 0.171Has a Black hole Companion.
SMCSMC AB7197,0002O6I13.016
SMCSMC AB8197,0002O4V12.83
SMCHD 5980 C200,0003OI8.8 - 11.9Has a LBV and Wolf-Rayet Companion
SMCHD 346-W1200,0001O5.5lf
SMCHD 346-W3200,0001O3V

Andromeda Galaxy and Triangulum Galaxy

The Andromeda Galaxy is 2.5 Mly distant and the Triangulum Galaxy is around 3.2 Mly distant
Host galaxyStar systemMedian distance Stars in systemSpectral typeApparent magnitude Comments and references
AndromedaLGGS J004246.86+413336.42,500,0001O3-O5If
TriangulumBMS2003 867| 8672,700,0002O4Iab+O4Ia
TriangulumM33 X-7 A2,700, 000±700002O7-8III+18.70Has a Black Hole Companion
TriangulumM33-013406.63 3,000,0001O9.5Ia