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Black Holes Encyclopedia
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Stellar mass black holes

These black holes are the collapsed cores of giant stars, with masses of a few times that of the Sun.

 NameDistanceMass
No image available A0620-00
Diameter 17-48 miles (27-75 km), equal to the size of a city		 2,800 to 3,400 light-years away in the constellation Monoceros 3 to 13 solar masses
Cygnus X-1 Cygnus X-1
Diameter 20-40 miles (30-60 km), equal to the size of a large American city		 6,000 to 10,000 light-years away in the constellation Cygnus 5 to 10 solar masses
GRO J0422+32 GRO J0422+32
Diameter roughly 10-40 miles (18-65 km) equal to the size of a large city		 8,100 light-years away in the constellation Perseus 3 to 11 solar masses
GRO J1655-40 GRO J1655-40
Roughly 14 miles (21 km)		 6,000 to 10,000 light-years away in the constellation Scorpius 7 solar masses
GRS 1009-45 GRS 1009-45
Diameter roughly equal to a large city		 13 light-years away in the constellation Vela 8 to 9 solar masses
GRS 1915+105 GRS 1915+105
Diameter roughly 50 miles (85 km) equal to the size of a large city		 8,100 light-years away in the constellation Aquila 14 solar masses
GU Muscae GU Muscae
Diameter of 25 miles (42 km)		 16,500 light-years away in the constellation Musca 7 solar masses
GX 339-4 GX 339-4
Diameter 20-35 miles (31-60 km), equal to the size of a large city		 27,000 light-years away in the constellation Ara, the altar 5.8 to 10 solar masses
H1705-25 H1705-25
Diameter roughly 20 miles (35 km), equal to the size of a large city		 27,000 light-years away in the constellation Ophiuchus 5 to 7 solar masses
IC 10 X-1 IC 10 X-1
Diameter roughly 80 miles (140 km), about the size of Connecticut		 2.4 million light-years away in the constellation Cassiopeia 23 solar masses
IGR J17497-2821 IGR J17497-2821
Diameter roughly equal to the size of a large city		 27,000 light-years away in the constellation Sagittarius Roughly 10 solar masses
LMC X-1 LMC X-1
Diameter roughly 40 miles (65 km), the size of a large city		 165,000 light-years away in the Large Magellanic Cloud, a companion galaxy to the Milky Way; in the constellation Dorado 10.9 solar masses
LMC X-3 LMC X-3
Diameter roughly equal to the size of a city		 165,000 light-years away in the Large Magellanic Cloud, a companion galaxy to the Milky Way; in the constellation Dorado 5 to 13 solar masses
M33 X-7 M33 X-7
Diameter roughly 60 miles (95 km)		 2.7 million light-years away in M33, the Triangulum galaxy About 15.7 solar masses
NGC 300 X-1 NGC 300 X-1
Diameter about 45 miles (75 km) roughly equal to the size of a large county		 6 million light-years away in the galaxy NGC 300, in the constellation Sculptor 15 solar masses
SS443 SS443
Diameter roughly 60 miles (96 km)		 16,000 light-years away in the constellation Aquarius 16 solar masses
V404 Cygni V404 Cygni
Diameter roughly 37-56 miles (60-90 km)		 7,800 light-years away in the constellation Cygnus 10 to 15 solar masses
V4641 Sagittarii V4641 Sagittarii
Diameter roughly 11-37 miles (18-60 km)		 1,600 light-years away in the constellation Sagittarius 3 to 10 solar masses
XTE J1118+480 XTE J1118+480
Diameter 26 miles (42 km), equal to the size of a large city.		 6,000 light-years away in the constellation Ursa Major 7 solar masses
XTE J1550-564 XTE J1550-564
Diameter roughly 38-55 miles (60-90 km)		 17 light-years away in the constellation Norma 10 to 15 solar masses
XTE J1650-500 XTE J1650-500
Diameter 14 miles (23 km)		 26,000 light-years away in the constellation Ara 3.8 solar masses