List of black holes

This is an incomplete list of black holes (and stars considered probable candidates) organized by size (including black hole stars of undetermined mass); some items in this list are galaxies or star clusters that are believed to be organized around a black hole.

Supermassive black holes and candidates

• OJ 287 (this BL Lac object has the largest known supermassive black hole at its center)
• 4C +37.11 (this radio galaxy is believed to have binary supermassive black holes)
• 3C 75
• HE0450-2958
• Hypercompact stellar system (is organized around a supermassive black hole)
• Q0906+6930 (a Blazar organized around a supermassive black hole)
• Sagittarius A*

Intermediate-mass black holes and candidates

• GCIRS 13E
• M-15 NGC 7078
• M-33 Triangulum NGC 598
• M-110 NGC 205
• M-31 G1 NGC 224
• M82 X-1
• NGC 253
• NGC 1313 X-1
• NGC 1313 X-2

Stellar black holes and candidates

• 4U 1543-475/IL Lupi
• A0620-00/V616 Mon
• Cyg X-1 (this black hole is currently thought to be the closest to Earth, at about 6,000 light years)
• Cygnus X-3
• GRO J1655-40/V1033 Sco
• GRS 1124-683/GU Mus
• GRS 1915+105/V1487 Aql
• GS 2000+25/QZ Vul
• GX 339-4/V821 Ara
• M33 X-7 (most massive stellar-mass black hole known)
• MACHO-96-BLG-5
• MACHO-98-BLG-6
• MACHO-99-BLG-22
• SN 1997D (in NGC 1536)
• SS 433
• V404 Cyg
• XTE J1118+480/KV UMa
• XTE J1550-564/V381 Nor
• XTE J1650-500 (this is the smallest known black hole yet discovered)
• XTE J1819-254/V4641 Sgr

Black holes of undetermined mass

• GRO J0422+32

Micro black holes

As of July 2009, the existence of micro black holes remains solely the subject of theoretical models; research in this area with particle accelerators (such as the Large Hadron Collider) is on-going, although the artificial production of micro black holes with particle accelerators has caused some to voice concerns for safety.

External links

• NASA's general description of black holes.
• A list of black hole stars and candidates compiled by Dr. William Robert Johnston, Ph.D (Physics), a post-doctoral researcher at the University of Texas (Dallas).

See also

• Black hole
• Supermassive black hole
• Intermediate-mass black hole
• Stellar black hole
• Micro black hole