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Black Holes Encyclopedia
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Supermassive black holes

These are the black hole behemoths, weighing in at a few million to a few billion times the mass of the Sun. These black holes inhabit the cores of galaxies.

 NameDistanceMass
3c273 3c273
Diameter roughly equal to the size of our solar system		 2 billion light-years away in the constellation Virgo Roughly 1 billion solar masses
Arp 151 Arp 151
Diameter roughly 30 to 100 times the size of the Sun		 300 million light-years away in the constellation Ursa Major 6.5 million to 20 million solar masses
IC 1459 IC 1459
Diameter roughly the size of the orbit of Jupiter to larger than the orbit of Neptune		 100 million light-years away in the constellation Grus 350 million to 2.5 billion solar masses
M104 M104
Diameter larger than the orbit of Saturn		 32 million light-years away in the constellation Virgo 660 million solar masses
M105 M105
Larger than Earth's orbit around the Sun, but smaller than Jupiter's orbit		 38 million light-years away in the constellation Leo 60 million to 200 million solar masses
M106 M106
Greater than the distance from Earth to the Sun		 24 million light-years away in the constellation Canes Venatici 24 million to 38 million solar masses
M31 M31
Diameter roughly equal to the orbit of Venus.		 2.5 million light-years away in the constellation Andromeda 30 million solar masses
M32 M32
Diameter about 10 million miles -- about 12 times the diameter of the Sun		 2.4 million light-years away in the constellation Andromeda 3 million solar masses
M51 M51
Diameter of 4 million miles (6 million km), about four times the diameter of the Sun.		 27 million light-years away in the constellation Canes Venatici, beneath the Big Dipper 1 million solar masses
M60 M60
Diameter 45 billion miles (27 billion km), roughly eight times the diameter of Neptune's orbit around the Sun		 51 million light-years away in the constellation Virgo 4.5 billion solar masses
M77 M77
Slightly smaller than Mercury's orbit around the Sun		 50 million to 60 million light-years away in the constellation Cetus 15 million solar masses
M81 M81
Diameter roughly 30 million miles (45 million km), about 30 times the diameter of the Sun.		 12 million light-years away in the constellation Ursa Major 7 million solar masses
M84 M84
Diameter roughly equal to the size of Neptune's orbit around the Sun, making it as big as our solar system.		 50 million light-years away in the constellation Virgo Roughly 1.5 billion solar masses
M87 M87
Three times the diameter of Pluto's orbit around the Sun		 50 million light-years away in the constellation Virgo 6.6 billion solar masses
Milky Way Milky Way
Diameter roughly 15 million miles (24 million km).		 27,000 light-years away in the constellation Sagittarius 4.1 million solar masses
NGC 1023 NGC 1023
Roughly the size of Earth's orbit around the Sun		 33 million light-years away in the constellation Perseus 40 million to 60 million solar masses
NGC 1194 NGC 1194
Diameter larger than Earth's orbit around the Sun		 170 million light-years away in the constellation Cetus 65 million solar masses
NGC 1277 NGC 1277
Diameter more than 11 times the diameter of the orbit of Neptune, the most distant planet in our solar system		 220 million light-years away in the constellation Perseus 17 billion solar masses
NGC 1365 NGC 1365
Eight times the diameter of the Sun		 56 million light-years away in the constellation Fornax 2 million solar masses
NGC 2273 NGC 2273
Diameter roughly two-thirds as wide as Mercury's distance from the Sun		 85 million light-years away in the constellation Lynx 7.5 million solar masses
NGC 2778 NGC 2778
From smaller than Mercury's orbit to as large as Venus' orbit		 76 million light-years away in the constellation Lynx 9 million to 36 million solar masses
NGC 2787 NGC 2787
Diameter roughly equal to the size of Earth's orbit around the Sun		 24 million light-years away in the constellation Ursa Major 36 million to 45 million solar masses
NGC 2960 NGC 2960
Diameter equal to the distance from the Sun to Mercury		 230 million light-years away in the constellation Hydra 11.5 million solar masses
NGC 3115 NGC 3115
Diameter probably equivalent to the size of Uranus' orbit around the Sun		 32 million light-years away in the constellation Sextans 400 million to 2 billion solar masses
NGC 3245 NGC 3245
Diameter roughly equal to the diameter of Jupiter's orbit around the Sun		 68 million light-years away in the constellation Leo Minor 160 to 260 million solar masses
NGC 3377 NGC 3377
As small as Venus' orbit around the Sun to as large as the asteroid belt		 33 million light-years away in the constellation Leo 30 million to 120 million solar masses
NGC 3384 NGC 3384
Diameter roughly the size of the orbit of Mercury, the closest planet to the Sun		 38 million light-years away in the constellation Leo 16 million solar masses
NGC 3393 NGC 3393
Diameter larger than the orbit of Mercury		 165 million light-years away in the constellation Hydra 31 million solar masses
NGC 3516 NGC 3516
Slightly larger than Mercury's orbit around the Sun		 120 million light-years away in the constellation Ursa Major 23 million solar masses
NGC 3585 NGC 3585
Diameter larger than the size of the orbit of Jupiter		 70 million light-years away in the constellation Hydra 340 million solar masses
NGC 3607 NGC 3607
Diameter larger than the size of the orbit of Mars		 65 million light-years away in the constellation Leo 125 million solar masses
NGC 3608 NGC 3608
Diameter slightly less than the size of the orbit of Jupiter		 75 million light-years away in the constellation Leo 210 million solar masses
NGC 3783 NGC 3783
About half the size of Mercury's orbit around the Sun		 130 million light-years away in the constellation Centaurus 8 million to 10 million solar masses
NGC 3842 NGC 3842
Diameter roughly 6 times the size of the orbit of Neptune		 320 million light-years away in the constellation Leo 9.7 billion solar masses
NGC 3862 NGC 3862
Unknown		 260 million light-years away in the constellation Leo Unknown solar masses
No image available NGC 3945
Diameter about one-half the size of the orbit of Mercury		 65 million light-years away in the constellation Ursa Major 9 million solar masses
NGC 3998 NGC 3998
Diameter roughly the diameter of Jupiter’s orbit to the diameter of Uranus’ orbit around the Sun		 45 million light-years away in the constellation Ursa Major 270 million to 800 million solar masses
NGC 4026 NGC 4026
Diameter the size of the outer edge of the asteroid belt		 50 million light-years away in the constellation Ursa Major 210 million solar masses
NGC 4061 NGC 4061
Diameter at least equal to the diameter of Neptune's orbit around the Sun		 325 million light-years away in the constellation Coma Berenices 1 billion to 9 billion solar masses
NGC 4151 NGC 4151
Diameter equal to the size of the orbit of Saturn		 43 million light-years away in the constellation Leo 45 million solar masses
NGC 4253 NGC 4253
Diameter roughly the size of the orbit of Mercury		 170 million light-years away in the constellation Coma Berenices 20 million solar masses
NGC 4261 NGC 4261
Diameter range from the size of Saturn's orbit around the Sun to the size of Neptune's orbit		 100 million light-years away in the constellation Virgo 500 million to 1.2 billion solar masses
NGC 4335 NGC 4335
Diameter roughly the size of the orbit of Mars		 215 million light-years away in the constellation Ursa Major 100 million solar masses
NGC 4342 NGC 4342
Diameter equal to the diameter of Jupiter’s orbit around the Sun		 75 million light-years away in the constellation Virgo 300 million solar masses
NGC 4388 NGC 4388
Diameter about three-quarters of the distance from the Sun to Mercury		 62 million light-years away in the constellation Virgo 8.5 million solar masses
NGC 4473 NGC 4473
Diameter roughly equal to the size of the asteroid belt in our own solar system.		 50 million light-years away in the constellation Virgo Roughly 100 million solar masses
NGC 4486b NGC 4486b
Diameter roughly equal to the diameter of Saturn’s orbit around the Sun		 55 million light-years away in the constellation Virgo 500 million solar masses
NGC 4697 NGC 4697
Diameter larger than the size of the asteroid belt.		 40 million light-years away in the constellation Virgo Roughly 175 million solar masses
NGC 4889 NGC 4889
Diameter roughly 6 to 17 times the size of the orbit of Neptune		 335 million light-years away in the constellation Coma Berenices 9.8 billion to 27 billion solar masses
NGC 541 NGC 541
Unknown		 216 million light-years away in the constellation Cetus Unknown solar masses
NGC 5576 NGC 5576
Diameter roughly equal to the outer edge of the asteroid belt		 90 million light-years away in the constellation Virgo 180 million solar masses
NGC 6240 NGC 6240
Diameter roughly equal to the diameter of Uranus' or Neptune's orbit around the Sun		 320 million light-years away in the constellation Ophiuchus 870 million to 2 billion solar masses
No image available NGC 7457
About 15 times the diameter of the Sun		 43 million light-years away in the constellation Pegasus 2.1 million to 4.6 million solar masses
No image available NGC 821
Diameter from the size of Earth's orbit to the size of Mars' orbit around the Sun		 100 million light-years away in the constellation Aries 50 million to 100 million solar masses
RX J1242-11 RX J1242-11
Greater than the size of the asteroid belt in our solar system		 700 million light-years away in the constellation Virgo 100 million solar masses
SDSS J0927+2943 SDSS J0927+2943
Roughly equal to the diameter of Saturn's orbit around the Sun		 6.5 billion light-years away in the constellation Leo 600 million solar masses
ULAS J1120-0641 ULAS J1120-0641
Larger than the diameter of Neptune's orbit around the Sun		 13 billion light-years away in the constellation Leo 2 billion solar masses