Name the most massive black holes

Name the most massive black holes (includes probable candidates)

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Last updated: February 19, 2026

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First submitted	February 19, 2026
Times taken	27
Average score	1.3%
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Answer

Phoenix A

IC 1101

4C +74.13

TON 618

SDSS 143148.09+053558

SDSS J114833.14+193003.2

NGC 3842

SMSS J215728.21-360215.1

SDSS J102325.31+514251.0

Abell 1201 BCG

H1821+643

NGC 6166

4C +37.11

ESO 383-76

2MASS J13260399+7023462

ESO 444-46

UGC 10143

APM 08279+5255

Holmberg 15A

NGC 4889

SDSS J074521.78+734336.1

OJ 287 primary

NGC 1600

SDSS J010013.02+280225.8

SDSS J08019.69+373047.3

SDSS J115954.33+201921.1

SDSS J075303.34+423130.8

SDSS J080430.56+542041.1

SDSS J081855.77+095848.0

NGC 1270

SDSS J082535.19+512706.3

S5 0014+81

SDSS J013127.34-032100.1

ICRF J131043.3-555211

PSO J334.2028+01.4075

RX J1532.9+3021

QSO B2126-158

NGC 1281

SDSS J015741.57-010629.6

SDSS J230301.45-093930.7

SDSS J140821.67+025733.2

SDSS J075819.70+202300.9

CID-947

SDSS J080956.02+502000.9

SDSS J014214.75+002324.2

Messier 87

NGC 5419

SDSS J025905.63+001121.9

SDSS J094202.04+042244.5

QSO B0746+254

QSO B2149-306

SDSS J090033.50+421547.0

Messier 60

SDSS J011521.20+152453.3

QSO B0222+185

Hercules A (3C 348)

SDSS J075403.60+481428.0

SDSS J150752.66+133844.5

Abell 1836-BCG

SDSS J213023.61+122252.0

SDSS J173352.23+540030.4

WISE J104222.11+164115.3

SDSS J025021.76-075749.9

NGC 1271

SDSS J030341.04-002321.9

QSO B0836+710

SDSS J162752.18+541912.5

SDSS J224956.08+000218.0

SDSS J030449.85-000813.4

SDSS J234625.66-001600.4

ULAS J1120+0641

QSO 0537-286

NGC 3115

Q0906+6930

SDSS J025231.19+034112.7

QSO B0805+614

Messier 84

Pōniuāʻena

PKS 2059+034

Abell 3565-BCG

NGC 7768

NGC 1277

SDSS J233254.46+151305.5

QSO B225155+2217

QSO B1210+330

Cygnus A

Sombrero Galaxy

Markarian 501

PG 1426+015

3C 109

3C 273

ULAS J1342+0928

SDSS J155053.16+052112.1

Messier 49

NGC 1399

PG 0804+761

PG 1617+175

PG 1700+518

UGC 12591

SDSS J214611.58-070449.2

SDSS J020151.65+012902.5

SDSS J113029.48+634620.4

NGC 4261

PG 1307+085

SDSS J134617.54+622045.5

SAGE0536AGN

NGC 1275

3C 390.3

II Zwicky 136

PG 0052+251

Messier 59

PG 1411+442

Markarian 876

PG 0953+414

PG 0026+129

Fairall 9

NGC 7727

Markarian 1095

Andromeda Galaxy

OJ 287 secondary

PG 1211+143

Messier 105

Markarian 509

RX J124236.9-111935

Messier 85

NGC 5548

Messier 88

Messier 81

Markarian 771

Messier 58

PG 0844+349

Centaurus A

Markarian 79

Messier 96

Markarian 817

NGC 3227

NGC 4151 primary

3C 120

Markarian 279

NGC 3516

NGC 863

Messier 82

Messier 108

M60-UCD1

NGC 3783

Markarian 110

Markarian 335

NGC 4151 secondary

NGC 7469

IC 4329A

NGC 4593

Messier 61

Sagittarius A*

Messier 32

NGC 4395

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