• Source: List of black holes

This list of black holes (and stars considered probable candidates) is organized by mass (including black holes of undetermined mass); some items in this list are galaxies or star clusters that are believed to be organized around a black hole. Messier and New General Catalogue designations are given where possible.




Supermassive black holes and candidates



1ES 2344+514
Ton 618 (this quasar has possibly the biggest black hole ever found, estimated at 66 billion solar masses)
3C 371
4C +37.11 (this radio galaxy is believed to have binary supermassive black holes)
AP Lib
S5 0014+81 (said to be a compact hyperluminous quasar, estimated at 40 billion solar masses)
APM 08279+5255 (contains one of the largest black holes, estimated at 10-23 billion solar masses; previous candidate for largest)
Arp 220
Centaurus A
Fornax A
HE0450-2958
IC 1459
Messier 31 (or the Andromeda Galaxy)
Messier 32
Messier 51 (or the Whirlpool Galaxy)
Messier 60
Messier 77
Messier 81 (or Bode's Galaxy)
Messier 84
Messier 87 (or Virgo A)
Messier 104 (or the Sombrero Galaxy)
Messier 105
Messier 106
Quiescent (Galaxy) (Black Hole at the center of the Andromeda Galaxy)
Mrk 421
Mrk 501
NGC 821
NGC 1023
NGC 1097
NGC 1271
NGC 1277
NGC 1332
NGC 1566
NGC 2787
NGC 3079
NGC 3115
NGC 3377
NGC 3384
NGC 3998
NGC 4151
NGC 4261
NGC 4438
NGC 4459
NGC 4473
NGC 4486B (a satellite galaxy of Messier 87)
NGC 4564
NGC 4579
NGC 4596
NGC 4697
NGC 4889
NGC 4945
NGC 5033
NGC 6251
NGC 7052
NGC 7314
PKS 0521-365
Q0906+6930 (a blazar organized around a supermassive black hole)
RX J1131 (first black hole whose spin was directly measured)
Sagittarius A*, which is in the center of the Milky Way




= Types

=
Quasar
Supermassive black hole
Hypercompact stellar system (hypothetical object organized around a supermassive black hole)




Intermediate-mass black holes and candidates


Cigar Galaxy (Messier 82, NGC 3034)
GCIRS 13E
HLX-1
M82 X-1
Messier 15 (NGC 7078)
Messier 110 (NGC 205)
Sculptor Galaxy (NGC 253)
Triangulum Galaxy (Messier 33, NGC 598)




Stellar black holes and candidates


1E1740.7-2942 (Great Annihilator), 340 ly from Sgr A*
4U 1543-475/IL Lupi
A0620-00/V616 Mon (once thought to be the closest to Earth known, at about 3,000 light years)
CXOU J132527.6-430023 (a candidate stellar mass black hole outside of the Local Group)
Cygnus X-1
Cygnus X-3
GRO J0422+32 (possibly the smallest black hole yet discovered)
GRO J1655-40/V1033 Sco (at one time considered the smallest black hole known)
GRS 1124-683/GU Mus
GRS 1915+105/V1487 Aql
GS 2000+25/QZ Vul
GX 339-4/V821 Ara
IGR J17091-3624 (candidate smallest known stellar black hole)
LB-1 (name of both a galactic B-type star and a very closely associated over-massive stellar-mass black hole)
M33 X-7 (stellar black hole with the most massive stellar companion, located in the Triangulum Galaxy)
MOA-2011-BLG-191/OGLE-2011-BLG-0462 (first known isolated stellar black hole)
SN 1997D (in NGC 1536)
SS 433
V404 Cyg
V Puppis
XTE J1118+480/KV UMa
XTE J1550-564/V381 Nor
XTE J1650-500 (at one time considered the smallest black hole known)
XTE J1819-254/V4641 Sgr
LMC X-1 (first X-ray source in the Large Magellanic Cloud)




= Black holes detected by gravitational wave signals

=

As of February 2019, 10 mergers of binary black holes have been observed. In each case two black holes merged to a larger black hole. In addition, one neutron star merger has been observed (GW170817), forming a black hole. In addition, over 30 alerts have been issued since April 2019, of black hole merger candidates.

GW 150914




Multiple black hole systems






= Binary black holes

=
EGSD2 J142033.66 525917.5 core black holes — galaxy hosting a dual AGN
OJ 287 core black holes — a BL Lac object with a candidate binary supermassive black hole core system
PG 1302-102 – the first binary-cored quasar — a pair of supermassive black holes at the core of this quasar
SDSS J120136.02+300305.5 core black holes — a pair of supermassive black holes at the centre of this galaxy
In addition, the signal of several binary black holes merging into a single black hole and in so doing producing gravitational waves have been observed by the LIGO instrument. These are listed above in the section Black holes detected by gravitational wave signals.




= Trinary black holes

=
As of 2014, there are 5 triple black hole systems known.

SDSS J150243.09+111557.3 (SDSS J1502+1115) core black holes — the three components are distant tertiary J1502P, and the close binary pair J1502S composed of J1502SE and J1502SW
GOODS J123652.77+621354.7 core black holes of triple-clump galaxy
2MASX J10270057+1749001 (SDSS J1027+1749) core black holes




See also


Black hole
Lists of black holes
List of nearest black holes
Supermassive black hole
Intermediate-mass black hole
Stellar black hole
Micro black hole
Lists of astronomical objects




References






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).

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