Image

HCG

Right ascension

Declination

Galaxy count

Members

Notes

1

4

UGC 248, PGC 1625, PGC 1614, PGC 1618

In Andromeda, westnorthwest of HD 2315

2

4

UGC 312, Markarian 552, UGC 314, UGC 315

In Pisces, east of HD 2679

3

4

MCG-01-02-032, PGC 2064, PGC 2059, PGC 2043

In Cetus, less than 1 degree north of NGC 157

4

5

ESO 540-1, ESO 540-2, PGC 2051, PGC 2057, PGC 2040

In Cetus

5

4

NGC 190, NGC 190S, MCG+01-02-042, PGC 2326

In Pisces

6

4

PGC 2347, PGC 2350, PGC 2351, PGC 2353

In Cetus, south of the asterism Pointer made of HD 3841, HD 3821, HD 3770, HD 3733, and HD 3707

7

4

NGC 192, NGC 196, NGC 197, NGC 201

In Cetus, contains three spirals and one lenticular galaxy

8

4

MCG+04-03-008, PGC 2888, PGC 2890, PGC 2892

In Andromeda

9

4

MCG-04-03-027, MCG-04-03-028, PGC 3196, PGC 3200

In Cetus

10

4

NGC 536, NGC 529, NGC 531, NGC 542

In Andromeda

11

4

ESO 476-8, MCG-04-04-010, PGC 5357, PGC 5381

In Cetus

12

5

MCG-01-04-052, PGC 5432, PGC 5439, PGC 5443, PGC 5445

In Cetus

13

5

MCG-01-05-002, MCG-01-05-003, MCG-01-05-004, PGC 5728, PGC 5741

In Cetus

14

4

MCG-01-06-017, MCG-01-06-019, MCG-01-06-020, MCG-01-06-022

In Cetus

15

6

UGC 1617, UGC 1618, UGC 1618 B, UGC 1620, UGC 1624, MCG+00-06-033

In Cetus

16

4

NGC 835, NGC 833, NGC 838, NGC 839

In Cetus. Contains three starburst galaxies, two LINER galaxies, and a Seyfert 2 galaxy

17

5

PGC 8558, PGC 8559, PGC 8560, PGC 8561, PGC 8564

In Aries

18

4

MCG+03-07-038, UGC 2140

In Aries

19

4

MCG-02-07-073, MCG-02-07-074, MCG-02-07-075, PGC 10269

In Cetus

20

6

PGC 10364, PGC 10365, PGC 10366, PGC 10367, PGC 10368, PGC 10369

In Aries

21

5

NGC 1099, NGC 1100, NGC 1098, NGC 1091, NGC 1092

In Eridanus

22

5

NGC 1199, NGC 1190, NGC 1189, NGC 1191, NGC 1192

In Eridanus

23

5

NGC 1214, NGC 1215, NGC 1216, MCG-02-08-054

In Eridanus

24

5

MCG-02-09-031, MCG-02-09-032, PGC 12472, PGC 12492, PGC 12489

In Eridanus

25

7

UGC 2690, UGC 2691, PGC 12524, PGC 12530, PGC 12533, PGC 12538, PGC 12550

In Cetus

26

7

MCG-02-09-035, HCG 26b, PGC 12604, PGC 12605, PGC 12610, PGC 12613, PGC 12615

In Eridanus

27

6

PGC 14861, PGC 14862, PGC 14863, PGC 14866, PGC 14870, PGC 14873

In Eridanus

28

4

PGC 15135, PGC 15136, PGC 15141, HCGd 28d

In Eridanus

29

4

PGC 15559, PGC 15560, PGC 15561, PGC 15562

In Eridanus, immediately west of υ2 Eridani (Upsilon2 Eridani)

30

4

MCG+00-12-051, MCG+00-12-054, PGC 15624, PGC 15636

In Eridanus

31

4

NGC 1741A, PGC 16570, NGC 1741B, PGC 16571

In Eridanus

32

4

MCG-03-13-053, PGC 16578, PGC 16584, PGC 16587

In Lepus, westnorthwest of planetary nebula Abell 7, southeast of R Leporis (Hind's Crimson Star)

33

4

PGC 16863, PGC 16866, PGC 16867, PGC 16871

In Taurus

34

4

NGC 1875, VV 169b, VV 169c, VV 169d

In Orion, half a degree southsouthwest of Dolidze 17 (asterism Metronome)

35

6

PGC 24596, PGC 24597, PGC 24598, PGC 24599, PGC 24600, PGC 24601

In Lynx

36

4

IC 528, IC 528C, PGC 25782, PGC 25791

In Cancer

37

5

NGC 2783, UGC 4856, MCG+05-22-016, MCG+05-22-018, MCG+05-22-020,

In Cancer

38

4

MCG+02-24-012, UGC 5044, MCG+02-24-014, PGC 26830

In Leo

39

4

PGC 26925, PGC 26926, PGC 26929, PGC 26931

In Hydra

40

6

MCG-01-25-008, MCG-01-25-009, MCG-01-25-010, MCG-01-25-011, MCG-01-25-012, PGC 27517

In Hydra, also known as Arp 321

41

4

UGC 5345, UGC 5346, MCG+08-18-046, PGC 28784

In Ursa Major

42

4

NGC 3091, NGC 3096, MCG-03-26-006, PGC 28926

In Hydra, also known as NGC 3091 Group

43

6

Z 8-59, Z 8-61, Z 8-62, PGC 29666, PGC 29668, PGC 29673

In Sextans, less than one degree eastnortheast of α Sextantis (Alpha Sextantis)

44

4

NGC 3185, NGC 3187, NGC 3190, NGC 3193

In Leo

45

4

UGC 5564, PGC 30137, PGC 30143, PGC 30156

In Ursa Major

46

4

MCG+03-27-005, MCG+03-27-007, MCG+03-27-008, MCG+03-27-009

In Leo

47

4

UGC 5644, MCG+02-27-013, MCG+02-27-014, MCG+02-27-015

In Leo

48

4

IC 2597, ESO 501-59, PGC 31577, PGC 31580

In Hydra

49

4

PGC 32890, PGC 32893, PGC 32895, PGC 32899

In Ursa Major

50

5

PGC 34444, PGC 34447, PGC 34448, PGC 34452, PGC 34453

In Ursa Major, half a degree eastsoutheast of Messier 97 (Owl nebula)

51

7

NGC 3651, NGC 3653, IC 2759, MCG+04-27-030, MCG+04-27-027, PGC 34899, PGC 34901

In Leo

52

4

MCG+04-27-036, PGC 35178, PGC 35179, PGC 35184,

In Leo

53

4

NGC 3697, Mrk 1296, MCG+04-27-044, PGC 35381

In Leo

54

4

IC 700

In Leo

55

5

PGC 35573, PGC 35574, PGC 35575, 2MASX J11320571+7048236, HCG 55e

In Draco, half a degree northwest of NGC 3735

56

5

MCG+09-19-113, Mrk 176, PGC 35609, PGC 35615, PGC 35618

In Ursa Major, south of NGC 3718 and a popular target for amateur astronomers

57

8

NGC 3753, NGC 3746, NGC 3750, NGC 3754, NGC 3748, NGC 3751, NGC 3745, PGC 36010

In Leo, also known as Copeland Septet

58

5

NGC 3817, NGC 3819, NGC 3820, NGC 3822, NGC 3825,

In Leo and Virgo

59

5

IC 737, IC 736, PGC 36871, PGC 36867, PGC 36851

In Leo

60

4

MCG+09-20-071, PGC 38053, PGC 38064, PGC 38072

In Ursa Major

61

4

NGC 4169, NGC 4170, NGC 4174, NGC 4175

In Coma Berenices, also known as Box galaxies

62

4

NGC 4759, NGC 4761, NGC 4764, NGC 4776, NGC 4778

In Virgo

63

4

ESO 381-50, ESO 443-37, PGC 44959, PGC 44979

In Centaurus

64

4

PGC 46971, PGC 46972, PGC 46975, PGC 46977,

In Virgo

65

5

ESO 444-55, PGC 47401, PGC 47403, PGC 47406, PGC 47407

In Hydra

66

4

MCG+10-19-104, PGC 48220, PGC 48231, PGC 48222

In Ursa Major

67

4

NGC 5306, MCG-01-35-013, MCG-01-35-015, PGC 49036

In Virgo

68

5

NGC 5350, NGC 5353, NGC 5354, NGC 5355, NGC 5358

In Canes Venatici

69

4

UGC 8842, Z 132-48, MCG+04-33-028, PGC 49499

In Bootes, HCG 69 is surrounded by other galaxies, such as IC 4343, IC 4344, IC 4345, IC 4346, IC 4348 and IC 4349

70

7

IC 4369, IC 4370, IC 4371, UGC 8990, MCG+06-31-057, MCG+06-31-065, PGC 50123

In Canes Venatici

71

4

NGC 5008, IC 4382, PGC 50640, PGC 50641

In Bootes

72

6

UGC 9532, MCG+03-38-017, MCG+03-38-018, MCG+03-38-018, MCG+03-38-020, MCG+03-38-022

In Bootes

73

5

NGC 5829, IC 4526, PGC 53702, PGC 53703, PGC 53720

In Bootes

74

5

NGC 5910, MCG+04-36-036, PGC 54692, PGC 54694, PGC 54697

In Serpens Caput

75

6

PGC 54802, PGC 54803, PGC 54804, PGC 54818, PGC 54824, PGC 54827

In Serpens Caput

76

5

NGC 5941, NGC 5942, NGC 5944, MCG+01-40-003, PGC 55313, PGC 55325

In Serpens Caput

77

4

UGC 10049, PGC 56121, PGC 56122, PGC 56125

In Serpens Caput

78

4

UGC 10057, MCG+11-19-016, PGC 56086, PGC 56095

In Draco

79

5

NGC 6027, NGC 6027a, NGC 6027b, NGC 6027c, NGC 6027d, NGC 6027e (tidal tail of NGC 6027)

In Serpens Caput, also known as UGC 10116, VV 115, Seyfert's Sextet or Serpens Sextet. Contains 2 lenticular galaxies, 3 spiral galaxies (one barred spiral) and a tidal tail.

80

4

PGC 56572, PGC 56577, PGC 56588, PGC 56590

In Draco

81

4

SDSS J161813.66+124811.2, PGC 57774, PGC 57777, PGC 57779

In Hercules

82

4

NGC 6161, NGC 6162, NGC 6163, PGC 58231

In Hercules

83

5

PGC 58559, PGC 58561, PGC 58562, PGC 58565, PGC 58569

In Hercules

84

6

PGC 58856, PGC 58861, PGC 58873, PGC 58877, PGC 58881, PGC 58884

In Ursa Minor

85

4

PGC 62476, PGC 62477, PGC 62478, PGC 62484,

In Draco

86

4

ESO 461-7, MCG-05-47-001, MCG-05-47-002, MCG-05-47-003,

In Sagittarius

87

4

ESO 597-36, PGC 65409, ESO 597-35, PGC 65414

In Capricornus, one of the most compact groups, hosting two active galactic nuclei and a starburst among its three members, all of which show signs of interaction

88

4

NGC 6978, NGC 6976, NGC 6977, MCG-01-53-014

In Aquarius

89

4

MCG-01-54-012, PGC 66574, PGC 66575, PGC 66580

In Aquarius

90

4

NGC 7173, NGC 7174, NGC 7176, and NGC 7172

In Piscis Austrinus, also called NGC 7176 Group

91

4

NGC 7214, ESO 467-15, ESO 467-13, HCG 91d

In Piscis Austrinus, also called VV 700 Group

92

5

NGC 7317, NGC 7318A, NGC 7318B, NGC 7319, NGC 7320C

In Pegasus, also called Stephan's Quintet, one galaxy of the fivesome, NGC 7320, is not part of the HCG but is a foreground galaxy in front of the other four galaxies in the HCG. When discovered, two of the galaxies in the grouping were considered to be one galaxy, NGC 7318.

93

5

NGC 7547, NGC 7549, NGC 7550, NGC 7553, NGC 7558

In Pegasus

94

7

NGC 7578, UGC 12477, PGC 70936, PGC 70937, PGC 70939, PGC 70941, PGC 70943,

In Pegasus

95

4

NGC 7609, MCG+01-59-046, PGC 71077, PGC 71080

In Pegasus, also called Arp 150 Group and NGC 7609 Group

96

4

NGC 7674, NGC 7674A, NGC 7675, PGC 71507

In Pegasus, immediately north of HD 220965

97

5

IC 5351, IC 5352, IC 5356, IC 5357, IC 5359

In Pisces, northnorthwest of 20 Piscium

98

4

NGC 7783, MCG+00-60-059, PGC 72810, NGC 7783 C

In Pisces. In 2019 a giant tidal tail and a large envelope was discovered around HCG 98 with the Wise Observatory

99

4

UGC 12897, UGC 12899, MCG+05-01-021, PGC 60, PGC 57

In Pegasus, west of HD 224895

100

4

NGC 7803, Mrk 934, MCG+02-01-009, MCG+02-01-010

In Pegasus